1. Shell material: plastic 2. Battery capacity: 250 mAh lithium battery 3. Light source: COB 4. Life time: 4-6 hours 5. Charging method: USB 6. Comes with a detachable silicone strap, which can be stretched to 20 cm 7. After the strap is removed, the light clip can be used to fix it on the backpack, waist belt, foot belt, etc. 8. IPX5 waterproof, not easy to damage in daily rain 9. Suitable for seat tubes, handlebars, front forks, helmets, etc. 10. Weight: about 24 grams 11. Size: about 7x3 cm
