Specifications:Output: 85 lumensInput: DC 5V 800MaLamp battery: Lithium battery 2000mahController battery: 180mahCharges via USB port, about 2-3 hours to fully charge. A full charge can last 4-8 hours depending on the mode used.Controller, about 1-2 hours to fully charge A full charge can last 2 monthsDistance: 10 metersLight source: 15LEDWeight: 0.23kgFeatures:1. Easy to mount (seat post or under the saddle)Freely switch the modes with handlebar mounted controller3. Make yourself visible day and night with bright light4. Waterproof level up to IPX45. Turn signal light indicated by red and yellow LED6. Brake and stop warning lights7. Automatic ON/OFFProduct List:1. Turn signal light2. Remote control3. Fixing holder and fixing screws4. Data cable5. Instructions manual