Wireless Headset Foldable Bluetooth-compatible ANC Noise Cancelling Stereo Music Headphone - Black Features: A new generation of Bluetooth-compatible 5.0 wireless connection technology, fast connection, stable and reliable transmission Using high-quality rebound memory foam, lightweight material, brings a softer wrapping feeling to your ears, comfortable to wear When the headset is out of power, you can connect the 3.5mm audio cable, and connect it to the computer, tablet, etc. to listen to music Specification: Brand: FINGERTIME Bluetooth-compatible version: V5.0 Support profile: A2DP V1.2\AVRCPV1.4\HFP v1.6\HSP1.2\DI v1.3 Working distance range: 10m Active noise reduction frequency range: 20-500HZ ANC noise value: -20±2db Frequency range: 2.4GHz-2.4835GHz Battery: 3.7V/500mAh Charging voltage: 5V/1A Charging time: about 2 hours Working time (Bluetooth-compatible only): about 28 hours Working time (Bluetooth-compatible and ANC): about 18 hours Working time (ANC only): about 60 hours Pa