Be Seen. Stay Safe. Go Anywhere.

The ESMARTER W676 USB Rechargeable LED Warning Light is a compact, multi-purpose safety lamp designed for cyclists, runners, hikers, dog walkers, and anyone who needs to stay visible in low-light conditions. With powerful red and blue flashing LEDs plus bright white light modes, this clip-on torch keeps you noticeable whether you're on a trail, road, or urban street.

Key Features

5 Lighting Modes: Main light (white strong / white low) and secondary light (red & blue flashing / white strong / white low) — adaptable to any environment or situation.
Dual LED + SMD Lamp Beads: High-brightness, long-life LED and SMD beads deliver pure colour rendering and a stable light output up to 100–200 metres range.
USB Rechargeable: Built-in 800mAh polymer lithium battery charges fully in just 3 hours via standard USB — no disposable batteries needed.
Multi-Mount Versatility: Use it as a bike tail light, helmet light, backpack light, shoulder clip light, running light, or waist warning light — one product, many uses.
Durable ABS + PC Construction: Drop-resistant and scratch-resistant body built for the outdoors, with life-grade waterproofing to handle light splashes and rain.
Lightweight & Compact: Just 43g and 7 × 2.5 cm — barely noticeable on your kit, but impossible to miss on the road.
RoHS, EMC & CE Certified: Meets international safety and electromagnetic compliance standards.

Product Specifications

Model	W676
Body Material	ABS + PC
Light Source	LED + SMD (Red / Blue / White)
Battery	Built-in 800mAh Polymer Lithium (included)
Charging	USB (5V DC), Charge Time: ~3 Hours
Working Time	1–2 Hours
Lighting Modes	5 Modes (White Strong / White Low / Red–Blue Flash / White Strong / White Low)
Waterproof Rating	Life-Grade (splash resistant; not for submersion)
Visible Range	100–200 Metres
Size	7 × 2.5 cm
Weight	43g
Certifications	RoHS, EMC, CE
Country of Origin	Made in Mainland China

Perfect For

Cycling · Running · Hiking & Climbing · Fishing · Dog Walking · Patrolling · Night Commuting · Outdoor Events

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Learn More About Cycling Safety

For tips on safe cycling practices and visibility guidelines, visit the CDC Bicycle Safety Resource.

Frequently Asked Questions

Q: Can the LED warning light be used as a bike tail light?

A: Yes! The ESMARTER W676 features a secure clip that attaches easily to bike frames, seat posts, and handlebars. Its red and blue flashing LED mode makes it highly visible to traffic from behind, making it an excellent bike tail light for day and night riding.

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

A: The built-in 800mAh polymer lithium battery provides 1–2 hours of working time depending on the lighting mode selected. A full recharge takes approximately 3 hours via USB.

Q: Is this light waterproof?

A: The W676 features life-grade waterproofing, meaning it can handle light rain and splashes comfortably during outdoor use. It is not designed to be submerged in water.

Q: What surfaces can I clip this warning light onto?

A: The versatile clip design fits onto bicycle frames, helmets, backpack straps, shoulder straps, waistbands, and more — giving you flexible hands-free visibility for virtually any outdoor activity.