Lightweight wireless in-ear headphones with Bluetooth 4.0 technology that deliver JBL’s Pure Bass Sound and provide the ability to make or take hands free calls and 6 hours of battery life. They are equipped with 8.6mm drivers, flat tangle-free cable and polymer Li-ion battery which can be fully charged in 2 hours. They also feature ergonomic ear-tips and neckband design for every day comfort even during prolonged use. Dynamic frequency response: 20 Hz-20 kHz. Sensitivity: 96 dB SPL/1mW. Impedance: 16 Ohm. Weight: 16.2 g. Black colour design.