Features: 1.RF Wireless Technology: Wireless caregiver watch features a dot LCD display with RF wireless technology and a stylish watch design 2.Time Display: Wireless smart caregiver pager supports 500 channels with accurate time display for peace of mind 3.Low Power Consumption: Wireless smart caregiver watch supports vibration and buzzer alerts, single or list display modes and low power consumption display 4.Removable Rechargeable Battery: The Wireless calling system uses a removable rechargeable battery for long standby times, with rechargeable circuit protection 5.Scope of Application: Calling caregiver watch can be used at home, hotels, bars, restaurants, factories, clubs, hospitals and offices specification:Item Type: Wireless Caregiver Watch Material: ABS, PVC Operating Frequency 433.92MHz Size : Approx. 46 x 48 x 15mm / 1.8 x 1.9 x 0.6in (without strap) Battery Model: 502535 Battery Type: Lithium Battery Battery Capacity: 400mah(included) Working Voltage:DC3.7V Operating Current:57mA10mA(buzzer mode),95mA10mA(vibration mode) Standby Current: