1. Small size and light weight, very suitable for riding and outdoor visual warning 2. Super bright LED COB, 1 light and 2 colors, excellent warning effect 3.5 modes, with mode memory, saving the trouble of selecting modes when the light is on 4. Built-in lithium polymer battery, USB rechargeable 5. Clip-shaped bracket, which can be hung on bags and belts for outdoor use 6. Equipped with hook/appearance strap for easy and quick installation Specifications: Light source: COB/LED Light color: 2 kinds red white/red blue Beam angle: 150 visible Battery: lithium polymer, 3.7V 250mAH Runtime: 8 to 20 hours, depending on usage patterns Charging: USB charging (Android type port), 5V 0.5A Waterproof level: IPX5, waterproof splash; do not immerse in water for use Installation: Suitable for pipe diameter 2.0-4.0CM Lighting mode: 5 modes, with mode memory, namely: 1. Red/White: Red always on, red strobe, white always on, white strobe, red and white strobe 2. Red/Blue: Red steady, red strobe, blue steady, blue strobe, red and blue strobe Product List: Headlight*1 USB charging cable*1 Silicone strap*1