Receiver Features: 1.Rechargeable design, comes with charging cable, more convenient to use. 2.LCD display, it supports time display and English user-friendly menu, simple operation. 3.It has multiple methods to remind, flashing, vibration and ringtone. 4.It is widely used in banks, restaurants, hotels, factories, hospitals, offices, leisure clubs, etc. 5.The transmission distance is 1500 meters in open area, and the actual indoor working distance is 100-150 meters. 6.Using 3.7V polymer lithium battery, the theoretical standby time is about 15 days. 7.It has dormancy function. The function of clock and alarm clock still works but won't receive calls under this mode, which can reduce the power consumption. Transmitter Features: 1.Place it on the table or on the wall, press the button and the indicator lights up and send the signal to the receiver. 2.Fashionable and beautiful appearance, silica gel keys is waterproof and comfortable to use. 3.Mini size and lightweight, convenient to carry and easy to use. 4.Adopts professional communication elements, ensures the stability of signal transmission. 5.World-class coding mode, no messy code. 6.Anti-temperature and humidity change, safe, stable and high reliability. Specification: Quantity: 10 transmitter+1 receiver Model: CTW06+CTT19 Voltage: 100-240V Options: US Plug, EU Plug, UK Plug Receiver Specification: Receiver model: CTW06 Host capacity: 500 Language: Support Chinese and English Prompt mode: vibration, beeping, flashing Receiving sensitivity: 110dBm Storage capacity: 20 groups Power supply: 3.7V 250mAh lithium battery Standby: Max. 15 days Receiving frequency: 433.92MHz Overall dimension: 50*41*14mm/2*1.6*0.5inch (excluding watchband) Transmitter Specification: Transmitter model: CTT19 Material: ABS Battery: 23A 12V battery Overall dimension: 57.5*57.5*7.2mm/2.3*2.3*0.3inch Package list: 1 x Receiver (watch) 10 x Transmitter (button) 1 x Manual 1 x USB cable 1 x Charging plug 1 x Double sided adhesive tape Note: To do pairing with transmitter, you need to connect the receiver wristwatch to the power supply and hold down two keys of receiver and transmitter at the same time to enter the pairing option.