Characteristics: 1. Wireless key finder: 1 transmitter and 4 receivers for locating items such as keys, wallet, TV remote control, purse, glasses, and more. 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 help you locate lost items. 4. The transmitter features an LED flashlight, ideal for finding lost items in dark environments. 5. The transmitter comes with a base, allowing it to be placed on a coffee table, TV cabinet, bedside table, computer desk, or bookshelf. Specifications: Material: ABS coating Color: as shown in the pictures Frequency: 433.92 MHz Sound Output: 75-80dB Transmission Range: 30-40 meters Package Includes: 1 x Transmitter 4 x Receivers 1 x Base 4 x Double-sided stickers 4 x Round buckles 1 x Instruction manual