Saddle mounted lights is suitable for JAVA road bikes while seatpost mounted lights is convenient for all other bike types.
-Aluminum alloy
-Automatically turns on and off depending on light intensity and motion
-Automatically switches to sleep mode to conserve power
-Seat rail mounting or seat post strap mounting
-4 flash modes
-20 hours run time
-400 mAH battery
-IPx6 waterproof
-USB charging