CooMax Spy Earpiece GSM Hidden Wireless Earphones Invisible Headset Nano SIM Microphone Exam - Mini Secret Headphone Listening Device Hearing Cheating (Spy Vip Pro UltraMini Piece)

❮ An invisible earpiece measuring 1.2 x 0.68 cm ❯ The Vip Pro UltraMini measures 1.2 x 0.68 cm and sits inside the ear canal, where it is hidden from view. The sound arrives by induction from the GSM piece, with no cable running to the ear. ❮ A cheat sheet for exams and public tests ❯ The exam earpiece works as a cheat sheet for exams, and the earphones are also used in presentations and covert communications. Some uses may break the rules of the centre or local law. ❮ Calls on a Nano SIM card with no phone ❯ The GSM piece has a Nano SIM slot and takes the call directly, with no mobile phone connected. It works for calls on GSM bands 900 and 1800 and on LTE bands B1/B3/B5/B7/B8/B20 (2100/1800/850/2600/900/800 MHz). ❮ An ultra-sensitive integrated microphone ❯ The GSM piece carries an ultra-sensitive integrated microphone and allows communication by whispering during the call, with nothing loose to position and nothing else to wear. ❮ 3 hours from the piece and 4 from the earpiece ❯ The GSM piece has a built-in rechargeable battery and gives roughly 3 hours depending on the volume, charged over the USB cable supplied. The Vip Pro UltraMini runs on a 337 SR416SW button cell and gives about 4 hours, with 2 cells included.