Block out the hustle and bustle of everyday life and become immersed in your music with the Silenco Series Noise-cancelling Bluetooth headphones. The headphones also feature on-ear music controls, collapsible design and a stylish carry case. Bluetooth Operating Distance: 10 m Chipset: CSR8635 Bluetooth Version: 4.0 Bluetooth Profiles: Playback Time: 16 hrs Battery Capacity: 300 mAh Charge Time: 3 hrs Battery Type: Li-Ion Impedance : 32 ? Sensitivity: 105 dB ±3 dB Driver: 40 mm ICASA : TA-2017/2435 Power Requirement: Frequency Response: 20 Hz – 20 kHz What's in the box 1X Stereo Bluetooth Wireless Headphones 1X Micro USB Charging Cable 1X AUX Cable 1X User Manual