{"product_id":"rolton-k400-voice-amplifier-headset-microphone-kit","title":"Rolton K400 Voice Amplifier \u0026 Headset Microphone Kit","description":"\n\u003ch2\u003eRolton K400 Headworn Microphone \u0026amp; Portable Voice Amplifier Kit\u003c\/h2\u003e\n\u003cp\u003eWhether you're leading a classroom, guiding a tour, hosting a meeting, or running a promotion, the \u003cstrong\u003eRolton K400 Voice Amplifier Kit\u003c\/strong\u003e keeps your voice clear, crisp, and effortlessly projected — no straining required. This compact all-in-one kit pairs a professional omnidirectional condenser headset microphone with a powerful \u0026gt;5W loudspeaker in a palm-sized design you can clip to your belt and forget about.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Rolton K400 Loudspeaker\u003c\/li\u003e\n  \u003cli\u003e1 × 1200mAh Detachable 18650 Battery\u003c\/li\u003e\n  \u003cli\u003e1 × Professional Wired Headset Microphone\u003c\/li\u003e\n  \u003cli\u003e1 × USB Charging Cable\u003c\/li\u003e\n  \u003cli\u003e1 × Waistband Belt Clip\u003c\/li\u003e\n  \u003cli\u003e1 × Instruction Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowerful 5W+ Audio Output\u003c\/strong\u003e — Projects your voice clearly across classrooms, meeting rooms, and outdoor spaces\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLong Battery Life\u003c\/strong\u003e — 1200mAh detachable 18650 battery delivers up to 8 hours of continuous use at moderate volume\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB Charging\u003c\/strong\u003e — Charges via any standard 5V USB charger (mobile phone charger compatible; 500mA+ recommended)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUSB \u0026amp; TF Card Music Playback\u003c\/strong\u003e — Doubles as a portable speaker; play music directly from a USB drive or TF\/microSD card\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOmnidirectional Condenser Mic\u003c\/strong\u003e — Captures your voice naturally from any angle with a small-diaphragm condenser transducer\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWired \u0026amp; Reliable\u003c\/strong\u003e — No Bluetooth dropouts or pairing hassles; plug in and go\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKnob Volume Control\u003c\/strong\u003e — Simple, tactile dial lets you adjust volume on the fly without fumbling through menus\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUltra-Compact Design\u003c\/strong\u003e — 8.5 cm × 8.5 cm × 3.4 cm (approx. 3.3\" × 3.3\" × 1.2\"); fits in a pocket or clips neatly to your waistband\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;\"\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eAudio Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u0026gt;5W\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eBattery Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e1200mAh (Detachable 18650)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003ePlayback Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003eUp to 8 hours (50–80% volume)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCharging\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003eStandard USB 5V (≥500mA)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eMicrophone Style\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003eHeadworn \/ Headset\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eMicrophone Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003eCondenser, Omnidirectional\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eConnection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003eWired\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eMedia Playback\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003eUSB Drive \u0026amp; TF Card\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e8.5 cm × 8.5 cm × 3.4 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px;border:1px solid #ddd;\"\u003eMade in China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eTeachers \u0026amp; Educators\u003c\/li\u003e\n  \u003cli\u003eTour Guides\u003c\/li\u003e\n  \u003cli\u003eCorporate Presenters \u0026amp; Trainers\u003c\/li\u003e\n  \u003cli\u003eEvent Hosts \u0026amp; Promoters\u003c\/li\u003e\n  \u003cli\u003eFitness Instructors\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-5m-nylon-braided-3-5mm-aux-audio-cable-car-phone-headphone\"\u003e1.5M Nylon Braided 3.5mm AUX Audio Cable | Car, Phone \u0026amp; Speaker\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-compartment-travel-pill-organizer-portable-daily-pill-case\"\u003e10-Compartment Travel Pill Organizer | Portable Daily Pill Case\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor guidance on safe audio listening levels, visit the \u003ca href=\"https:\/\/www.cdc.gov\/nceh\/hearing_loss\/index.html\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCDC's Hearing Loss Prevention resource\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is included in the Rolton K400 Voice Amplifier Kit?\u003c\/h4\u003e\n\u003cp\u003eA: The kit includes the K400 loudspeaker unit, a 1200mAh detachable 18650 battery, a professional wired omnidirectional headset microphone, a USB charging cable, a waistband belt clip, and an instruction manual — everything you need to start amplifying your voice right away.\u003c\/p\u003e\n\n\u003ch4\u003eQ: How long does the battery last on a single charge?\u003c\/h4\u003e\n\u003cp\u003eA: The 1200mAh battery supports up to 8 hours of use. At 50–80% volume, you can expect approximately 4–8 hours of continuous operation. The battery is detachable and charges via a standard 5V USB cable, making it easy to swap or recharge using a regular phone charger.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can the Rolton K400 play music as well as amplify my voice?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! In addition to voice amplification through the wired headset microphone, the K400 supports USB disk and TF (microSD) card playback, so you can play background music or audio files directly from the unit.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is the headset microphone compatible with other amplifiers?\u003c\/h4\u003e\n\u003cp\u003eA: The included wired condenser headset microphone uses a standard connection. While it is optimized for use with the K400 amplifier, it may be compatible with other amplifiers or audio systems that share the same input type. Check your other device's specifications before connecting.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this voice amplifier suitable for outdoor use?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The K400 is designed for versatile use in both indoor and outdoor settings — including classrooms, tour group walks, outdoor promotions, and more. Its compact, belt-clip design makes it easy to carry and use hands-free in any environment.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is included in the Rolton K400 Voice Amplifier Kit?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The kit includes the K400 loudspeaker unit, a 1200mAh detachable 18650 battery, a professional wired omnidirectional headset microphone, a USB charging cable, a waistband belt clip, and an instruction manual — everything you need to start amplifying your voice right away.\"}}, {\"@type\": \"Question\", \"name\": \"How long does the battery last on a single charge?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The 1200mAh battery supports up to 8 hours of use. At 50–80% volume, you can expect approximately 4–8 hours of continuous operation. The battery is detachable and charges via a standard 5V USB cable, making it easy to swap or recharge using a regular phone charger.\"}}, {\"@type\": \"Question\", \"name\": \"Can the Rolton K400 play music as well as amplify my voice?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! In addition to voice amplification through the wired headset microphone, the K400 supports USB disk and TF (microSD) card playback, so you can play background music or audio files directly from the unit.\"}}, {\"@type\": \"Question\", \"name\": \"Is the headset microphone compatible with other amplifiers?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The included wired condenser headset microphone uses a standard connection. While it is optimized for use with the K400 amplifier, it may be compatible with other amplifiers or audio systems that share the same input type. Check your other device's specifications before connecting.\"}}, {\"@type\": \"Question\", \"name\": \"Is this voice amplifier suitable for outdoor use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The K400 is designed for versatile use in both indoor and outdoor settings — including classrooms, tour group walks, outdoor promotions, and more. Its compact, belt-clip design makes it easy to carry and use hands-free in any environment.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Audio \u0026 Gadgets\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/collections\/audio-gadgets\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Rolton K400 Voice Amplifier \u0026 Headset Microphone Kit\", \"item\": \"https:\/\/0i45ne-c8.myshopify.com\/products\/rolton-k400-voice-amplifier-headset-microphone-kit\"}]}\u003c\/script\u003e","brand":"Zpaxo","offers":[{"title":"Rose","offer_id":54186771349814,"sku":"14:496#Rose","price":49.81,"currency_code":"USD","in_stock":false},{"title":"Black","offer_id":54186771382582,"sku":"14:175#Black","price":49.81,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0989\/7774\/3158\/files\/S599145a0b8ec43a5b4e8e859dd9e58e4M.webp?v=1783189182","url":"https:\/\/0i45ne-c8.myshopify.com\/products\/rolton-k400-voice-amplifier-headset-microphone-kit","provider":"Zpaxo","version":"1.0","type":"link"}