ITEM NAME:Remote Control Wireless Mtb Bike Bicycle Taillight Turn Signal Light Indica B6F8 Remote Control Wireless Mtb Bike Bicycle Taillight Turn Signal Light Indica B6F8 Mounting Placement: Seatpost Power Supply: USB First use belt to fixed mount on bicycle tube,then Insert the light into mount. Use rubber band fix the controller on the handlebar. Charging cable please keep. Operation instructions: Press the power button on the tail light in 4-6seconds to check the button light flash. Press and hold the remote control button for 3 seconds to confirm the connection. The middle button on the controller can control the red LED warning light , and the left and right buttons control the Yellow LED direction indicator light on the tail light. Battery and charging instructions: Tail light: Use the built-in 800mAh rechargeable battery,Turn on the back of the tail light rubber charging port cover,insert the Micro- plug USB charging cable for charging. Charging time 3 hours,use time 3-4hours. Pay attention to the battery is not allowed to replace by self. Controller: Using a 3v CR2025 lithium battery. The battery cover plate on the back of the controller can be replaced by self. Shell color:black Arrow color:Green Material:plastic size:11*3.4*2.5cm Package Contents: 1* Wireless controller 1* Tail light 1* fixed Bracket 1* USB Micro- charging cable