Characteristics:1. Wireless key finder: 1 transmitter and 4 receivers for locating any items such as klucze, wallet, TV remote control, purse, glasses, whatever you need.2. Strong signal design: transmission range of 30-40m (98-131ft), radio frequency can penetrate walls, floors, etc. This allows you to easily find your items.3. Easy to use: With just a press of a color-coded button, a loud beep and flashes will lead you to find lost items.4. It has a led flashlight on the transmitter, very convenient to find lost key and other items even in dark environments.5. The transmitter is equipped with a base, so it can be placed on a tea table, TV cabinet, bed, computer desk or bookshelf.Specification:Material: ABS coatingColor: as shown in the picturesFrequency: 433,92 MHzVoice: 75-80DbTransmission range: 3040 metersList of packages:1 * Transmitter4 * Receivers1 * base4 * double-sided sticker4 * Round Buckle1 * Instructions!