Black Calls/Music Head-band Headset Wired & Wireless USB connectivity Bluetooth 5.0 Supraaural 20 - 20000 Hz 32110 dB Microphone type: Built-in -38 dB Built-in battery Lithium Polymer (LiPo) 400 mAh Wireless on-ear headphones with 30 hours playtime, EQ3 Sound and all-day comfortGO Anywhere.Enjoy all-day comfort and crystal clear music with the Studio Wireless. A long 30+ hour battery life with Bluetooth 5 keeps you GOing and jamming no matter where you are. Have full control over your music with the touch of a button while you hit the beach, travel, or just relax. Adjust the sound to your preference with EQ3 Sound, choose between Signature, Balanced, and Bass Boost. Their ultra-plush Faux Leather and Cloud Foam ear cushions and headband provide a studio look and feel.30+ Hour Bluetooth 5 PlaytimeKeep your music hassle-free by wirelessly linking your Bluetooth enabled device and streaming from up to 30 feet away. With up to 30+ hours Bluetooth 5 playtime of mind blowing sound thatll