Active Noise Cancelling Headphones Toptone Foldable Lightweight Bluetooth Headphones Over Ear with Mic HiFi Sound Deep Bass Comfortable Protein Earpads ANC Wireless Headphones Small

Every Toptone bluetooth headphones includes a 30-day money back. Gentle Reminderplease take off the headphone every 2-3 hrs to get your ears relax, in order to get better hearing enjoyment, and keep the head comfortable. SpecificationsChip: CSRBluetooth version: V4. 1Transmission distance: >10m/33ftNoise reduction depth: -22~-30dBCharging time: About 2 hoursUsing time: 12-16 hoursWaterproof rating: IPX4Frequency response: 20-20KHzWhat's in the boxToptone B1 Active Noise Cancelling Bluetooth HeadphoneHeadphones Carrying CaseMicro USB Cable3. 5mm Audio CableAirplane AdapterUser Guide