New design, the battery has changed into 550 mAh,  Low power consumption, noise reduction technology guarantee. Two way covert communication via mobile phone network. Optimized inductive coil creates strong power for earpiece. Package List: 1x New GSM BOX (Size: 35*50*13mm, Weight: 1x E218 Earpiece 2x 337 battery, The New 4K Full HD Hi-Focus Dual Way Talking Earpiece is a piece of spy hardware that is worn inside the ear and is invisible to the eye. It allows the user to covertly carry on a conversation using any four band mobile Sim

 Audio signals are transmitted to the earpiece from a GSM box containing a SIM card. A powerful inductive coil ensures that audio can be clearly transmitted to the earpiece 40 cm to 60

cm away. The GSM box is designed to look like a credit card. It is equipped with a powerful 35 dB microphone which crisply picks up audio and allows the user to carry on conversations

completely undetected. The microphone clearly picks up whispers even when the GSM box is carried below a user's clothes.. The Dual Way Talking Earpiece is the perfect solution for all

covert communication. Highlights: Two way covert communication via mobile phone networks Optimized inductive coil creates strong power for earpiece 2-3hours talking time, or 3 hours Standby time IMEI Unique New 4.5W GSM Box