OxyLED Gravity Sensor LED ON/Off Lamp, Built-in 450mAh Battery, USB Rechargeable, Warm Light (1 Pack) 12 LED LIGHTS : soft, warm, yellow light through 12 LEDs. Comfortable on the eye. No UV or radiation. Mercury free 2 LIGHT MODES: equipped with bright and dim mode, controlled via a flick of a switch. Low power consumption and long lasting lifespan GRAVITY SENSOR: fun, creative design with gravity sensor. Turn on/off the light based the wording on/off wording displayed and the side the light tilts. Equipped with anti-skid rubber foot for a firm and sturdy grip RECHARGEABLE BATTERY: Built-in 450mAh polymer lithium battery, can be recharged for repeated use SAFE & ENVIRONMENTALLY FRIENDLY: comfortable on the eye. No UV or radiation. mercury free