High-quality metal in-ear Bluetooth headphones. They have an ergonomic, fit to ear shape. The remote control on the cable has a sensitive microphone and provides convenient volume control as well as receiving/ending telephone calls. Built-in magnets allow you to connect your headphones to each other, which improves the comfort of wearing them. The batteries placed in the headphones allow for a long talk and standby time. Perfect for long journeys and everyday use. Charging cable included. TECHNICAL DATA: Bluetooth profiles: A2DP, AVRCP, HFP, HSP Bluetooth version: 4.2 Maximum range: up to 10m Built-in lithium-polymer battery: 60mAh Frequency range: 280Hz-16kHz Charging voltage: 5V Music playback time approx. 3.5 hours Talk time about 4.5 hours Charging port: microUSB The length of the cable between the headphones: 60cm The length of the charging cable: 15cm Weight: 25g