Bicycle Parts Features: - Compact size and light weight, ideal for cycling and outdoor visual warning; - Super bright LED COB, 2 color lights in 1 lamp, excellent warning effect; - 5 modes, w/ mode memory, saving trouble to select mode when lamp on; - Li-polymer battery embedded, USB Rechargeable; - Clip-shaped holder bracket, may hang on bag, belt for outdoor use; - Comes with hook/look strap for easy and quick mount; - Quick release, tools free. Specifications: - Light source: COB LED; Light Color: Red White or Red Blue; - Beam Angle: 150 degree visible; - Light control: Press button; - Battery: Li-polymer, 3.7V 250mAH; - Run time: 8 to 20 hours, subject to mode in use; - Charging: USB charge (Android type port), 5V 0.5A; - Ingress protection: IPX5, Water Splash Proof; do not submerge in water to use; - Net weight: About 20 grams - Mount: Fits tube Dia. 2.0-4.0CM - Light Mode: 5 modes, with mode memory, namely: 1. Red/White: Red steady, Red Strobe, White Steady, White Strobe, Red White Strobe 2. Red/Blue: Red steady, Red Strobe, Blue Steady, Blue Strobe, Red Blue Strobe Package includes: 1PC Tail light Head 1PC Gel strap; 1PC USB line