Bluedio T6 T6, is the superior version of Turbine 6th generation. Details and sound quality are fully upgraded. Adopting all titanized 57mm diaphragm and Bluedio Vector Flow Technology to strengthen the bass, add stylish colour matched laser caving, together with deep ANC active noise cancelling, turbine 6th generation enables users to enjoy wonderful music even better. Its elegant profile impressive and solid quality at first sight, attached by its outstanding looks and extremely comfortable to wear, you surely cannot put T6 headphones down. This new T6 headphones has line-in play function as well, it can be connected to mobile phones or computers via 3.5 mm type C audio cable to play music. Specifications Bluetooth version: 4.2 Bluetooth operating Range: Up to 10 m (free space) Bluetooth transmission frequency: 2.4GHz to 2.8GHz Bluetooth profiles: A2DP, AVRCP, HSP, HFP Drivers: Φ57mm * 2 Impedance: 16Ω Frequency response: 15Hz-25,000Hz Sound Pressure Level (SPL): 115dB Standby time: about 1000 hours Bluetooth music/talk time: about 25 hours Music/talk time under ANC: 25 hours Charging time: 1.5-2 hours for full charge Headphones weight: 290g Colour: B l a c k Package includes T6 Turbine 6th generation headphones USB TYPE-C charging cable Flocking bag User manual