Remote Control Bicycle Direction Lamp High quality remote control LED directional light is used for night use, such as cycling, baby carriage, jogging, walking, road emergency and camping. Its directional flashing indicates that night travel safety factor is greatly enhanced. Characteristic: 1. wide visual range.2. easy to install.3. use the built-in500mAh Rechargeable battery;Lift time:4-5hours4. surface waterproof effect reaches IPX2,guarantee daily use.5. high quality LED, guarantee the warning effect.6.Warning LED:Red and Blue Flashing Bicycle light function: 1. Remote Control: A total of 3 buttons1)The left turn key: Pre the left turn button,the button indicator flashes, and the rear left turn indicator flashes, and then pre the button to turn off the indicator light.2) Right turn key: Pre the right turn button, the button indicator flashes, and the rear right turn indicator flashes, and then pre the button to turn off the indicator light3) LED light key: pre the LED button, the button indicator is always on ,and the red light in the tail lamp is always on.Pre the LED button again, the button light flashes, and the red light in the rear light blinks. Pre the LED button for the third time, and turn off the red light on the tail light2. Tail lights: a switch button, red LED warning light, yellow LED indicator light. AttentionS: 1. do not disaemble and refit without permiion.2. This product only protects again rain. Please dont immerse it in water.3. after use ,please turn off the tail switch button ,to avoid battery leakage of electricity.4. Pay attention to the battery is not allowed to replace by self. Package: 1X Rechargeable Bike Rear light1 * Remote Control1 * USB Charging Cable2 * Mounting Base2 * Banding How to connect 2 lights with 1 control ? you can watch this video