4 in1 Wireless Remote Lost Finder Remote Control Finder Key Locator w/ LED Light Features: *Made of high-quality materials, sturdy and *Multi-function 1 transmitter 4 receiver, can find multiple items at the same time. * No APP required, simple , just 1 click and sound reminder. *The receiver uses CR2032 coin cell batteries (not included), 1 battery can last up to 6 months. *The sound is loud, the volume is 75-80 decibels, and the search distance is 15-30m/49.2-98.4ft in diameter. *Convenient to hang keys, wallet, remote control, glasses, cell phone, dog collar or other things that are easily lost. Specification: *Item Type: Wireless Key Finder *Material: ABS *Weight: approx. 116.0g/4.1oz *Operating frequency: 433.92MHz *Working distance: about 15-30m/49.2-98.4ft (open space) *Volume: 75-80 dB *Transmitter Batteries: 2 AAA batteries (not included) *Receiver battery: CR2032 (not included) Package includes: 1X Base 1X transmitter 4X receiver 1X Manual 4X keychain 4X double sided tape Notes: 1. Due to factors such as display brightness and light brightness, the actual color of the product may be slightly different from the website picture. 2. Please allow a slight deviation between the data and the manual measurement. Made of high-quality materials, sturdy and Multi-function 1 transmitter 4 receiver, can find multiple items at the same time. No APP required, simple , just 1 click and sound reminder. The receiver uses CR2032 coin cell batteries (not included), 1 battery can last up to 6 months. The sound is loud, the volume is 75-80 decibels, and the search distance is 15-30m/49.2-98.4ft in diameter.