Bass headset black 50 hours powerful

Active Noise Cancellation - ANC Active Noise Cancellation or ANC technology uses microphones to detect the noise around you and counter it. This allows you to experience more immersive sound and free from any distraction. This technology has become an essential feature in luxury audio devices because it provides comfort and better sound quality, especially in crowded places like airplanes or big cities. Features: Effective range: 10 meters Frequency range: 2.402 GHz - 2.480 GHz Battery specifications: 3.7 volts / 500 mAh, built-in rechargeable lithium-ion battery Charging voltage: DC 4.2-5.5 volts Charging time: about 2.5 hours Working time: about 50 hours Contents: 1 × Bass Headphones 1 × Charging cable 1 × Carrying bag 1 × User manual This is a nice and useful summary of active noise cancellation technology and the items that come with the device. Warranty: 24 months through the agent