Easy to use, just plug it to any devices with USB port, also supports ac power supply(5V) | Adopts premium LED, no flicker, nonradiative, friendly to eyes | Suitable for home, school, office, etc, good for night studying, reading, etc | The neck is flexible to be bent in angle and shape to meet your need | The light shell and neck uses good quality metal and PBT flame retardant materials, safe to use

【EXCELLENT PERFORMANCE】It is made of high quality materials, lightweight, rain resistant and durable. With stable performance, increased withstand voltage, increased adaptable voltage, and high reliability. | 【SENSITIVE CONTROL】The electric bicycle controller is a brushless motor controller, which can provide stable speed and sensitive control of braking and direction changes. | 【LCD DISPLAY】LCD display can clearly show the state and data, backlight enables you to see scree clearly in dim environment, buttons for quick operation, easy to use. | 【INSTRUMENT CONTROL PARAMETERS INCLUDE】Backlight brightness battery voltage level, vehicle wheel diameter, speed coefficient speed measurement magnetic steel number, zero/non-zero start selection, electric/power/hybrid mode selection total mileage reset, etc. | 【WIDE APPLICATION】This electric bicycle brushless motor controller is easy to install and use, comes with mount for LCD display and it is suitable for 22.5mm handlebar.