PingaOculto Spy Earpiece for Exams Invisible Hidden Mini Wireless Earphones in-Ear with Microphone Adhesive Strips - Discreet Communication Copy on Phone Call and Recordings (Spy Nano)

🕵【 A magnet earpiece of 3 mm 】 The Nano earpiece measures 3 mm across and sits inside the ear canal, out of sight once it is in place. It holds no battery and is never charged: the induction neckloop creates the vibration that becomes sound inside the earpiece. ⭐【 A cheat sheet for exams and public tests 】 The exam earpiece works as a cheat sheet, and the same set serves for presentations and for discreet communication. It is meant for rooms without noise, such as an exam hall or a library. ⚠️ Some uses may break the rules of the centre or the local law. 📱【 Calls and recordings through the 3.5 mm jack 】 The induction neckloop plugs into the headphone socket of the mobile phone and works for phone calls and for recordings. It is compatible with all mobile phones, including iPhone and Android. A multifunction button covers play, pause, next, previous, answering and ending the call. 🎙️【 A microphone built into the cable 】 A small microphone sits in the cable and is placed under the collar, out of sight. It is made for short answers, a cough or a tap, and not for speaking: the versions with an external wired microphone are the ones meant for whispering. 🔋【 Around 8 hours with 9 V batteries 】 The induction neckloop works with two 9 V batteries, which are not included in the kit, and gives roughly 8 hours depending on the volume. The magnet earpiece never needs charging, because it holds no battery of its own. Adhesive strips come in the kit.