$ 10.76
There are two mounts. One mount for the seatpost. Other is for seat rail. Seat rail mount is strap down with included zip-ties. There is one button on top surface, and one USB-C charging port on the bottom surface. Short pressing the button on top displays the battery charged percentage on the left side wall of a mounted bike light. However, the side wall doesn’t look like a LCD, but just a regular plastic shell like the rest of the bike light. So there is no fear of damaging any LCD on the bike light. Long pressing for 1.5 seconds turns the bike light on and off. Once on, short pressing the button will cycle through 6 modes of light as followed.Mode 1: Constant on (14h), Mode 2: Fast flash (21h), Mode 3: Breathing (23h), Mode 4: Single flash (35h), Mode 5: Strobe (30h), Mode 6: Heartbeat (38h)Once the light is turned on, it starts at whatever mode it was last left in before turning off. Short pressing the button will cycle to the next mode and its corresponding mode will also be displayed on the “LCD” area. After a few seconds, the “LCD” will switch from displaying the mode information to the battery charge percentage. Bike light enters sleep mode after 40 seconds of inactivity, and wakes with vibration. Another advance feature of this bike light is the automatic sensing brake light activation feature. When slowing down, the light will brightens and stay constantly on until there is no more motion, then it resumes its previous mode. The bike light is IPX6 rated (can withstand powerful water jets in any direction).Specifications: Battery Capacity: 3.7V, 500mAH; Weight 23g; Dimennsions: H: 32mm, W: 32mm, D: 34mm