With voice control via Siri and Google Assistant Wireless high-performance headphones Reinforced design resistant to sweat and water, e.g. during training or running Charger with integrated lithium-polymer battery (550 mAh) - charges the headphones during transport Headphones with integrated lithium-ion batteries (85 mAh each) for up to 7 hours of music (at medium volume) Control element directly on the headphone for controlling music and managing calls Including USB charging cable for storage and charging box, as well as instructions and quick start guide Technical data Bluetooth� v5. 0 Supported Bluetooth� profiles: A2DP, HFP, HSP, AVRCP (if supported by the mobile phone) Frequency range: approx. 20 - 20,000 Hz Dimensions Headphones: approx. 5.2 x 2.8 x 4.5 cm Charger: approx. 7.5 x 7.6 x 5 cm USB cable length: approx. 60 cm Weight Headphones: approx. 11.5 g (including battery) Charger: approx. 72.5 g (including battery) USB cable: approx. 10 g Warning Listening to loud music through headphones for a long time can damage your hearing. Wireless high-performance headphones.