2019 Mini Earpiece Smaller Gsm Box With Micro Earpiece

This GSM ID card (box) size is the same as ID card. The frequency is 850/900/1800/1900 Mhz so can work for all countries. The sim card slot only support micro sim card. The transmitter range from GSM card to earpiece is around 50-60cm, depends on which earpiece you use. Build-in high sensitive microphone. The inside indicator can show the on/off and battery power (when charging, the indicator will blink). When you charging this device, pls make sure turn on it, then can be charged! Specifications: Size: 85 x 50 x 4.5mm(L x W x H) Weight: only 30 grams GSM card can work in any country Built-in induction Manufacturer description: Once insert a GSM SIM card and turn on the power, it will automatically pick-up calls from any mobile phone or telephone. Two way covert communication via mobile phone networks Optimized inductive coil creates strong power for earpiece Size 85*50*4.5 mm Around 2.5 hours talking time, or 48 hours Standby time