1. Watch Pager Capacity: can register 500 call button numbers
2. Receiving Sensitivity: -116dbm
3. Number of call information Stored: 30 main call numbers
4. Built in battery: 230mAh lithium battery
5. Theoretical standby time: 7 days
6. Frequency: 433.92MHz
7. Black box capacity: Last 200 call records
8. Size: Width 40mm * Length 250mm (including strap)
9. Color: Black
10. Material: ABS plastic