PingaOculto Spy Earpiece Wireless Earphones Invisible Hidden Mini Headset Exam for Phone with Microphone - Secret Earphone Micro Listening Device Hearing in Ear Cheating Earbuds (Spy Earpiece Nano)

??? Invisible Earpiece ?The smallest wireless, hidden magnet earpieces on the market with a mini size of only 3 mm in diameter. Completely hidden in the ear and undetectable. ?? For Exams ?The exam earpiece serves as an exam cheat sheet for presentations or spy communications. The magnet spy earphones can be used in noiseless environments such as an exam room or library. ??? Calls and Recordings ?Works with mobile phone for phone calls or recordings by connecting via 3.5 mm jack plug. Compatible with all mobile phones including iPhone and Android. ???? Integrated Microphone ?It includes a small spy microphone integrated in the cable that is placed in the hidden collar and allows short communications such as coughing or knocking. ??? Hours of Autonomy ?Autonomy of approximately 4 hours depending on volume. The Invisible Magnet Earpiece does not require charging. *Induction collar requires 2 x 9 V batteries not included.