ESMARTER COB LED Armband Light – Stay Visible, Stay Safe After Dark

Whether you're out for an early morning jog, evening bike ride, or late-night dog walk, the ESMARTER COB LED Armband Light keeps you clearly visible to drivers and other pedestrians. With a powerful 500-lumen output, IPX4 water resistance, and a convenient Type-C USB recharge port, this is the go-to wearable safety light for any active lifestyle.

Made in Mainland China.

Key Features

COB LED Technology: Delivers brighter, more uniform illumination than traditional LEDs — ensuring you're seen from all angles.
500LM Output: Ample brightness for night running, cycling, hiking, and other outdoor activities.
IPX4 Waterproof Rating: Splash- and rain-resistant, so wet-weather workouts are no problem.
Type-C USB Rechargeable: 350mAh built-in battery charges quickly via any USB-C cable — power bank, laptop, or wall adapter compatible.
3 Lighting Modes:
- Mode 1: White light (100%) – steady, strong illumination
- Mode 2: Red light (100%) – high-visibility warning mode
- Mode 3: Alternating red & white flash – maximum attention-grabbing visibility
Fully Adjustable Fit: Total length of 38.5 cm (approx. 15.2 in) with a 3 cm width; adjustable between 7–8 cm to fit wrists, ankles, and arms of both adults and children.
Lightweight Design: Weighs just ~36.5 g — you'll barely notice it's there.
Versatile Wear: Use it as an armband, wristband, ankle band, or even clip it to a bag or backpack.

Specifications

Material	ABS + Silicone
Color	Gray
Dimensions	~385 mm × 30 mm × 15 mm
Net Weight	~36.5 g
Brightness	500 LM
Battery	350 mAh (built-in, rechargeable)
Charging Port	Type-C USB
Waterproof Rating	IPX4
LED Type	White COB + Red COB
Modes	3 (White Steady / Red Steady / Alternating Flash)

Perfect For

Night running & jogging
Cycling & road biking
Walking the dog after dark
Hiking & camping
Kids' outdoor activities

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For general information on outdoor exercise safety and visibility, visit the CDC Physical Activity resource center.

Frequently Asked Questions

Q: How long does the battery last on a single charge?

A: The 350mAh built-in battery provides a solid runtime for most workouts. Runtime varies by mode — steady white light uses the most power, while the red flashing mode extends battery life significantly. Charge it via any Type-C USB cable before heading out for best results.

Q: Is the COB LED armband light suitable for children?

A: Yes! The band is fully adjustable between 7–8 cm and has a total length of 38.5 cm, making it easy to fit the wrists and arms of both adults and children. It's lightweight at just ~36.5 g, so kids won't find it uncomfortable to wear.

Q: What does IPX4 waterproof mean for this armband light?

A: An IPX4 rating means the light is protected against water splashed from any direction. This makes it suitable for use in rain or wet conditions during outdoor sports activities. It is not designed for submersion in water.

Q: Can I wear it on my ankle as well as my arm?

A: Absolutely. The flexible, adjustable band wraps around wrists, arms, and ankles with ease, making it a versatile wearable safety light for all kinds of activities, day or night.