Lite Saver - Power Failure Light - Night Light Dimension: (H) 5" - (W) 1 15/16" - (L) 1 1/2" Battery: Build in 2000mAh rechargeable li-ion battery LED Light Bulb: 21 LEDs on top, 1 LED at bottom Usage Time: 21 LEDs - 8 hours, 1 LED - over 144 hours Voltage: 110V