Features: 1. Wireless key finder: 1 transmitter and 4 receivers to locate any items such as keys, wallet, TV remote, handbag, glasses, whatever you need. 2. Strong signal design: 30-40 m transmission range (98-131 feet), radio frequency can penetrate through walls, floors, etc. So you can easily find your items. 3. Easy to use: just press a color-coded button and a loud beep and flashes will lead you to find lost items. 4. Has LED flashlight on transmitter, very convenient to find lost key and other items even in dark environment. 5. The transmitter is equipped with a base so that it can be placed on a tea table, an RTV cabinet, a bed, a computer desk or a bookshelf. Specification:Condition: 100% new!Material: ABS shellColor: as shown in the picturesFrequency: 433.92 MHzBattery (transmitter): AAA, 1.5 V 2 (for transmitter, not included) CR2032 button battery (with receiver)Voice: 75-80DbTransmission range: 30~40 meters Package list:1 single transmitter4 receivers1 base4 double sided sticker4>Round Buckle1, Instruction! li>