For sale: an advanced and practical smart pen with high specifications and an elegant design as shown in the picture: SIM card support: You can insert a mobile SIM card directly into the pen to receive calls. Very small hidden earpiece: Comes with an extremely small nano earpiece that is placed inside the ear completely hidden and comfortable to use. High-definition wireless connection: Automatic pairing and clear sound for easy communication. :////////// Earpiece (120) —- Please only serious buyers contact. ((((((((((The price is non-negotiable)))))))))))