The Cube-X builds on the success of its predecessor, increasing the diode count on the COB LED from 36 to an impressive 140. Perfect for the urban environment, the Ultratorch Cube-X stands out in the crowd and the compact COB (chip-on-board) arrangement takes up the smallest space on the seatpost.Key Features Low battery indicator USB Rechargeable 3.7v 300mAh li-Pol battery Waterproof IPX4 Tool-free seatpost (rear) strap and micro-USB cable included Dimensions: 40 x 38 x 23mm