Feature:1. Multifunction , with 1 Transmitter and 5 receivers, can find many items at the same time.2. No APP is needed, it is simple to use and can be pressed with a touch.3. The receiver uses a CR2032 button battery, which can last up to six months.4. Large volume distance, up to 7580 dB, looking for distance diameter 1530 meters/49.298.4in.5. This key finder is particularly suitable for seniors or someone who loses their items often.Specification:Condition: 100% Brand NewItem Type: Wireless Key FinderMaterial: ABSColor: As Pictures Shown Weight: Approx. 113g/4ozOperating Frequency: 433.92MHzWorking Distance: About 1530 meters/49.298.4in (open Area)Volume: 75-80 dBTransmitter Battery: CR2032 (Not including)Receiver Battery: CR2032 (Not including).Package List:1 x Receiver Base1 x Transmitter5 x Receiver 1 x Manual5 x Keyring5 x Double-sided Adhesive Tape1 x Cover Opener