ESMARTER T21 USB Rechargeable LED Headlamp – Super Bright, Waterproof & Hands-Free

Light up the night with the ESMARTER T21 LED Headlamp — a powerful, hands-free lighting solution built for outdoor adventurers and everyday users alike. Whether you're night fishing, hiking, camping, cycling, or working in low-light conditions, this headlamp delivers brilliant illumination exactly where you need it.

⚡ Key Features

Super Bright LED Illumination: Equipped with 7/5 high-output T6 LED bulbs with an illumination range of up to 100 meters — see clearly and stay aware of your surroundings in complete darkness.
5 Versatile Lighting Modes: Switch between Main Light Only, Side Light Only, All Lights Normal Brightness, All Lights Full Brightness, and SOS Strobe — adapting instantly to any situation.
180° Adjustable Beam Angle: Rotate the head unit a full 180° to direct light at any angle, indoors or outdoors, without shifting your position.
Waterproof Construction: Splash-proof and weather-resistant design with a sealed battery compartment — use confidently in rain, snow, or humid environments.
Long-Lasting 18650 Battery + USB Charging: Includes a high-capacity 18650 lithium-ion battery (3.7V, 20W) that charges via USB. Enjoy 8–12 hours of continuous use per full charge.
Comfortable & Adjustable Fit: Premium elastic headband fits adults and children comfortably, stays secure without slipping — even during vigorous activity.
CE & RoHS Certified: Meets international safety and environmental standards for your peace of mind.

🔦 Perfect For

Night fishing & early morning angling
Hiking, trail running & backpacking
Camping & climbing
Cycling & nighttime commuting
Home repairs, emergency preparedness & power outages

📦 Specifications

Brand	ESMARTER
Model	T21
LED Bead Type	T6
Wattage	20W
Battery	18650 Lithium-Ion (included), 3.7V
Beam Angle	180°
Lighting Modes	5
Illumination Range	Up to 100 metres
Battery Life	8–12 hours (full charge)
Charging	USB
Waterproof	Yes (splash-proof)
Certification	CE, RoHS
Country of Origin	Made in Mainland China

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For guidance on outdoor safety and emergency preparedness lighting, visit Ready.gov – Emergency Supply Kit.

Frequently Asked Questions

Q: How long does the ESMARTER T21 headlamp battery last on a full charge?

A: The T21 LED headlamp uses a high-capacity 18650 lithium-ion battery that provides 8–12 hours of continuous use after a full charge via the included USB cable. Battery life will vary depending on the brightness mode selected.

Q: Is the USB rechargeable headlamp truly waterproof for outdoor use?

A: Yes — the ESMARTER T21 features a splash-proof, waterproof design with a sealed battery compartment, making it suitable for use in rain, snow, and humid outdoor conditions such as fishing, hiking, and camping.

Q: What are the 5 lighting modes on this LED headlamp?

A: The five modes are: (1) Main light only, (2) Side light only, (3) All lights at normal brightness, (4) All lights at full brightness, and (5) SOS strobe mode — ideal for emergencies or signalling.

Q: Can children wear this headlamp comfortably?

A: Absolutely. The elastic headband is fully adjustable and designed to fit both adults and children securely without slipping, making it great for family camping trips and outdoor adventures.