Features 1??Multifunctional and powerful. Support smart charging, low battery prompt, online search, vibration, sound, light rotation, free to switch prompts. 2??With imported high-end professional processing chipset, high-performance noise reduction coding and decoding circuit, fast heat dissipation and strong stability. 3??Bring convenience to guests, guests can rest in the empty space after ordering, without waiting in line at the counter. 4??Super long launching distance. Guests can sit anywhere in the store, or stroll around and wait for the meal to remind them to pick up the meal. 5??Made of ABS engineering plastic material, military quality, exquisite workmanship, durable and durable, and long service life. 6??Stylish and advanced, proving the guests with high-tech dining experience and respected satisfaction. 7??Other restaurants have gradually used this meal picking device. If you don't keep up with the trend, it is a step backwards. Specification Item Type: Receiver Size: About 80 x 80 x 10mm / 3.1 x 3.1 x 0.4in Working Voltage: DC3.7V (Rechargeable Battery) Charging Voltage: DC5V 4A Working Frequency: 433.92MHZ Working Current: 75??10mA Standby Current: