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

❮ An earpiece of 1.2 x 0.68 cm inside the ear canal ❯ The Vip Pro UltraMini measures 1.2 x 0.68 cm and its conical shape keeps it inside the ear canal, where it is hidden from view. Its dark colour matches the bottom of the ear. ❮ Volume and sound quality by induction ❯ The induction piece transmits the sound straight to the earpiece, clear and crisp. There is volume to spare, so a recording is followed as easily in a silent exam room as in a noisy street. ❮ Bluetooth 4.0 with any phone or MP3 player ❯ The induction piece pairs over universal Bluetooth 4.0 with any Bluetooth device, phone or MP3 player, and serves a live call as well as a recording prepared in advance. Nothing runs from the piece to the ear. ❮ Microphone built into the induction piece ❯ The induction piece carries an integrated microphone, enough for two-way communication by agreed signals such as knocks. Its multifunction button answers and ends the call, and leaves both hands free. ❮ 3 hours of piece and 4 of earpiece ❯ The induction piece charges over the USB cable included and gives roughly 3 hours. The Vip Pro UltraMini earpiece runs on a 337 SR416SW button cell and gives about 4 hours depending on volume, with 2 cells in the kit.