This universal remote is compatible with most brands of the TV. Work light indicator. To search applicable models by entering manual codes. Use of new low-power chip, the battery more durable. Quick and easy maneuverability, portable to carry. How to Use: Press and hold \"set\" until the volume appears on the screen, then it ready for use. Press and hold \"set\", then press and hold the power button until the indicator light is on. Press the \"lock key\" for about 4 seconds, the red light flickers 3 times, it means the trademark search key is locked. Press the \"unlock key\" for about 4 seconds, the red light flickers 3 times, it means the trade mark search key is unlocked, here you can search again. Specification: Material: Plastic Power Supply: DC3V Distance or Remote Control: Approx. 8-12 meters Power Source: 2 x AA Batteries (Not included) Color: White Size: approx. 160 x 45 x 22mm What's in the box 1 X Remote Control (Battery NOT Included)