PreSonus® Eris HD10BT headphones provide studio-quality audio performance with the mobility and freedom of Bluetooth connectivity. Active Noise Canceling (ANC) reduces ambient sounds by up to 18 dB, so whether you’re walking down a busy street, or sitting in the middle seat on an airplane, you can listen to your favorite music, podcasts, or binge-worthy TV series in vivid sonic fidelity. Features Bluetooth® 5.0 wireless for mobile use, plus wired connectivity for use with professional devices, when wireless operation is prohibited, or when battery life is low (cable and ?”- to-¼” adapter included) Active Noise Canceling (ANC) to reduce environmental noise Closed back, over-ear design for superior isolation Easy-to-use level and track navigation controls 40 mm drivers for studio-quality sound reproduction Single-button call functionality with built-in microphone. Answer the phone without missing a beat Up to 16 hours of continuous battery life 96 dB sensitivity (±3 dB) Balanced frequency response (20Hz - 20kHz) Micro USB charging cable and hardshell carrying case included ? Specifications Type: Closed cup, circumaural Drivers: 40 mm, 16 ohm Frequency Response (Headphones): 20 Hz to 20 kHz Frequency Response (Microphone): 100 Hz to 10 kHz Sensitivity (Headphones): ?96 dB Sensitivity (ANC Microphone): -36 dB Sensitivity (Call Microphone): -45 dB Bluetooth Operating Range: 33 feet (10M) Playtime: Up to 16 hours (ANC off); Up to 8 hours (ANC on) Lithium Battery: 3.7V, 300mAH User Controls: Power/pair/call answer, volume, ANC on/off Connections: 1/8 stereo audio input, micro USB charging port Included Accessories: Micro USB charging cable, 1/8 audio cable, 1/8 to 1/4 audio adapter, hardshell carrying case WATCH: Introducing PreSonus Eris HD10BT noise-canceling Bluetooth headphones featuring JST DAVID