With On / Off switch on the base, easy to operate Built-in button battery, no wiring, no plugs With adhesive tape on the bottom, easy to place it anywhere Battery type: lithium cell CR1632 Material: Metal and plastic Main Color: Golden, white Size (W x H): . 2 x 3 cm / 0.79 x 1.18 inch Package Includes: 3 x table lamp (with button battery) Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.