Ultra Slim and Light Weight LED Light Stick. 10 NICHIA High Performance Flat LED Lights provide 220 lux @ .5m. 500 Cycle 3.7v 2400AH Li-Polimer Rechargeable Battery with integrated PCM Overcharge Protection. 2 Brightness settings provide 4 Hours of illumination at full brightness and 8 hours at half brightness. Push Button On/Off Switch. 12V UL/CE/CTICK Approved USB Power Adaptor and Universal Magnetic Mounting accessories included.