Regular visual warning + bright turn signal: just turn on the right / left turn signals via wireless remote control, emergency lights and ground lane warning. Get drivers attention to multiple blocks, securing your safety when riding in traffic. Note: The effective distance of the wireless remote control is 5 meters. Super Bright LED Bicycle Tail Light: This light combines regular visual warning with turn signal, providing visual warning effect. Equipped with quality LED chips and high volume rechargeable battery, this light is able to meet most visual warning needs desired while cycling. USB rechargeable and easy to install. Includes built-in 2200mAh high capacity battery, save money and replace battery time. Installation buckle design: very fastening after installation, suitable for mountain road, and easy to install. IPX4 waterproof level: IPX4 waterproof level can be used for small to medium rain at -4-140 F temperature - your best partner for outdoor cycling, always good for you. Satisfaction Guaranteed: Buy with confidence for the turn signals, if you are not satisfied with our products, please feel free to contact us and we will do our best to solve your problem within 24 hours. Features: Light source: 29 SMT LEDs (Everlight chips). Lamp battery: 2200mAh 18650 lithium battery. Charging: USB port (Android type), about 3-5 hours for full charge; input 4 V 1 A max. Controller battery: CR2032 3V 310mAH button cell battery, replaceable, non-rechargeable. Indication: Red light when charging, automatically turn off when fully charged. Time: subject to the mode of use, mainly, works 4-8 hours. Protection: rainproof, waterproof level IPX4. Support: suitable for diameter tube. 20-40 mm. Case: mainly black in color. Materials: mainly ABS, PC, silicone and electronic devices. Lifespan: 1000 times of charging, 5000 hours of service. Safest mode: Smart wireless remote, always think for you. Switch: remote control (socket mounted on the handlebar) Light color: red light yellow. Main mode: flash, stable. Rotation mode: 2 modes (Turn right, turn left). Features: Super bright LED bicycle tail light. via the wireless remote control. IPX4 waterproof level. 4V USB charging, easy to use with computer, laptop, android phone charger or battery bank. Easy to install and remove. Package includes: 1 bicycle rear light. 1 remote control. 1 rear light support. 2 rubber bands. 1 USB charging cable. 1 user manual (French not guaranteed).