... - For Child, Pet, baggage, MobileProduct Description:Locking wrist strap keeps the transmitter securely fastened to your child or ... . Components: - Keychain Receiver - Wristband Transmitter - Keys for Wrist Strap Transmitter Frequency: 433.92MHz Alarm Output: 80dB Control Types: ... : 60mm x 36mm x 15mm - Wristband Transmitter: 80mm Strap Diameter Power: AAA battery for receiver (not included), CR2032 ...