The Bluedio TMS ANC wireless headphone works flawlessly with your smartphone, tablet or MP3 player. The elaborate design adopts the ear-wrapped design, which can easily isolate noise and has double microphones and ANC to assist in noise reduction. VFT bass compensation technology of Vector Flow Booster Control. Up to 30 hours play time with Active Noise Cancelling function on. Bluetooth Version: 5.0 Working Distance: 10 meters Frequency Response: 20 - 20 000Hz Impendence: 16 Ohms Sensitivity: 118dB Noise Cancelling Sensitivity: -26dB Charging Time: 2 hours Music / Talk Time: Up to 60 hours ANC Music / Talk Time: Up to 30 hours Standby Time: Up to 1000 hours Battery Capacity: 650mAh Li-ion battery What's in the box 1X TMS ANC Wireless Headphone 1X Type-C USB Charging Cable 1X User Manual