Feature: 1. [ABS MATERIAL] This wireless calling system uses ABS high strength material, which is wear resistant, scratch resistant, sturdy and drop resistant, and has stable performance. 2. [Long Standby and Use Time] Long standby time, upgrade the chip, avoid the trouble of frequent charging, ≥10H pager usage time. The pager system is slightly water and oil resistant. 3. [Multi Window Call] High anti interference frequency without serial number, can be used by multiple units. It can accept multiple callers to meet the needs of multiple window. 4. [1000m / 3280ft Long Distance] Amplified signal and wider coverage. In the open place, the measurement distance is 1000m / 3280ft, but it will be affected by the environment. The actual distance shall prevail. 5. [Widely Used] 10 buzzers, if you need more buzzers, please contact us, it can be expanded to 999 buzzers. Widely used in fast food restaurants, Chinese restaurants, coffee shops, dessert shops, bakeries, clinics, etc. Specification: Item Type: Restaurant Pager System Material: ABS Pager Receivers: 10pcs Effective Range: 1000m / 3281ft (open area) Battery: Built in Li-ion Battery, 200mAh (included) Pager Usage Time: ≥10H Mode: Flash, Beep, Vibrate . Package List: 1 x Transmitter10 x Coaster Pagers2 x Power Adapters1x Charger Dock1 x Instruction Manual