Features 1??Convenient for Guests -- Guests can rest in the empty space after ordering, no need to wait in line at the bar 2??Super Long Transmission Distance -- Guests can sit anywhere in the store, or hang out around, waiting for reminding you of the meal 3??ABS Engineering Plastic Material -- Military quality, exquisite workmanship, durable and durable, long service life, saving shop costs 4??Wireless Receiver -- Stylish appearance, so that guests can enjoy the dining experience and the satisfaction of being respected not only in the dining but in the experience of high technology 5??High-end Professional Processing Chip -- Using imported processing chipset, high-performance noise reduction coding and decoding circuit, fast heat dissipation and strong stability Specification Features: 1. Convenient for Guests -- Guests can rest in the empty space after ordering, no need to wait in line at the bar 2. Super Long Transmission Distance -- Guests can sit anywhere in the store, or hang out around, waiting for reminding you of the meal 3. ABS Engineering Plastic Material -- Military quality, exquisite workmanship, durable and durable, long service life, saving shop costs 4. Wireless Receiver -- Stylish appearance, so that guests can enjoy the dining experience and the satisfaction of being respected not only in the dining but in the experience of high technology 5. High-end Professional Processing Chip -- Using imported processing chipset, high-performance noise reduction coding and decoding circuit, fast heat dissipation and strong stability Specification: Keyboard Transmitter: Size: Approx. 120 * 80 * 30mm / 4.7 * 3.1 * 1.2in Working Frequency: 433.92MHZ Working Current: 200??30mA Standby Current: 60??10mA Coding Method: Learning Code Receiver: Color: Purple Size: Approx. 69 * 69 * 12mm / 2.7 * 2.7 * 0.5in Working Frequency: 433.92MHZ Working Current: 130??20mA Standby Current: <14??3mA Decoding Method: Learning Code Battery Capacity: 280mAh Function: Only charge, bottom power prompt, online search, vibration, sound, light rotation, free to switch prompts, maximum support 999 discs Receiving distance: the receiving distance of the partition wall is 50-100 meters, and the receiving distance of the open space is 1500 meters (the distance can not reach the signal enhancer) Package List: 1 x Keyboard Transmitter 10 x Receiver 1 x Charging Base 1 x Power Adapter 1 x Instruction Manual Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.