Feature:1. RF Wireless Technology: Wireless caregiver watch features a dot LCD display with RF wireless technology and a stylish watch design2. Time Display: Wireless smart caregiver pager supports 500 channels with accurate time display for peace of mind3. Low Power Consumption: Wireless smart caregiver watch supports vibration and buzzer alerts, single or list display modes and low power consumption display4. Removable Rechargeable Battery: The Wireless calling system uses a removable rechargeable battery for long standby times, with rechargeable circuit protection5. Scope of Application: Calling caregiver watch can be used at home, hotels, bars, restaurants, factories, clubs, hospitals and officesSpecification:Item Type: Wireless Caregiver WatchMaterial: ABS, PVCOperating Frequency 433.92MHzSize Specification: Approx. 46 x 48 x 15mm / 1.8 x 1.9 x 0.6in (without strap)Battery Model: 502535 Battery Type: Lithium BatteryBattery Capacity: 400mah(included)Working Voltage:DC3.7VOperating Current:57mA10mA(buzzer mode),95mA10mA(vibration mode)Standby Current:<8mAPower Failure Current:1805uAReceiving Sensitivity:-108dBmDecoding:Learning CodingWaterproof Rating:IPX4Operating Temperature:-20 to 55Button Transmitter:Material: ABS, PVCOperating Frequency 433.92MHzColour: BlackBattery: DC12V Battery Type: 12V 23ABattery Type: AlkalineBattery Capacity: 45mAh(included)Emission Current: 10mA3mAStandby Current: <1uAClearance Distance: 100 to 200meters/109 to 218ydPush Button:1 Million TimesWaterproof Rating:IPX7Operating Temperature:-20 to 60Single Key:CALL.Package List:1 x Wireless Caregiver Watch Receiver1 x Wireless Caregiver Watch Button1 x Power Cable1 x User ManualNote:Shipped with Built in Battery