ITEM NAME:Bicycle Taillights Usb Charging Warning Light Highlighting Bead Taillights G7U2 Bicycle Taillights Usb Charging Warning Light Highlighting Bead Taillights G7U2 USB RECHARGEABLE: Both road bike lights charge with lightening speed! The light kit also comes with a USB CHARGING CABLE, so the only thing you need is a power source such as your laptop or portable power bank. SUPER EASY TO MOUNT: While other USB bike lights are clunky and difficult to install, these bicycle lights by Cycle Torch are extremely easy to mount UNIVERSALLY COMPATIBLE: These bike safety lights are universally compatible, which means you can mount them to the frame of your road bike, mountain bike, cruiser, BMX bike or tandem bike. Battery: lithium-polymer rechargeable, 100 mAh LED: 1 x 3535 ultra bright LED Front BOLT: USB Rechargeable front light to ensure maximum safety for your day-to-day commuting. Brightness: 20 lumens Operation Modes and Run Time: High mode: 2.5 hours Slow flashing mode: 8 -10 hours Quick flashing and Pulse mode: 5 - 8 hours Tail BOLT: USB Rechargeable rear red taillight provide maximum visibility when riding on foggy mornings. Brightness: 10 lumens Operation Modes and Run Time: High mode: 5 hours Slow flashing mode: 15 -20 hours Quick flashing and Pulse mode: 10 - 15 hours Waterproof and Dustproof Sturdy build with IP65 Waterproof is a perfect lighting in any weather and any time of the year. Universal Fit and Quick Installation Bolt COMBO fits ALL bikes. No Tools required, this set installs in under 5 seconds. Doesn't matter what bike you're riding, we've got you covered! How to charge Bolt COMBO Set: 1. Remove the rubber cap at the bottom of the light and connect the light to your PC or a 5V USB battery charger. Lens turns RED and charging stars. 2. When the lens turns GREEN charging is complete. 3. The battery charges 80% after about 2 hours. colour:black + white Material:Plastic + rubber Package Contents: 1 * USB charging warning light 1 * lamp holder 1 * U