Features: 1.The product adopts ABS engineering plastic. High quality, exquisite workmanship, durable and anti-fall, long service life to save the costs. 2.High-end professional processing chip: imported processing chipset, high-performance noise reduction coding and decoding circuit, fast heat dissipation and great stability. 3.Convenient for customers. After ordering, customers can take a rest at the table instead of waiting in line. 4.Fashionable and exquisite appearance. Let the guests not only in the dining but in the experience of high-tech dining enjoyment, the satisfaction of being respected. 5.Adopting high craft, perfect combination of economy and high quality. specification:Item Type: Pager Receiver Size: Approx. 10.5x5x1.1mm/0.4x0.2x0.04in Working Voltage: DC3.7V (rechargeable battery) Charging Voltage: DC5V 4A Working Frequency: 433.92MHZ Working Current: 7510mA Standby Current: