Wired & Wireless Connection: Advanced Bluetooth-compatible 5.3 chip offers a connection within 10m of your device. The headphone comes with a 3.5mm audio cable,meaning you can switch to wired mode and enjoy your music non-stop Noise Reduction: Adopting ANC intelligent noise reduction design,it can isolate the noise from the environment to restore clear sound,making you enjoy crystal-clear voice All-day Comfort: The headphone has soft earpads. You will be able to experience a marshmallow-like softness texture on the ear cushions. The foldable leather earmuffs and adjustable head beam make it easy to adjust the headphone to your preferred fit for all-day comfort Nice Gift: This headset is an excellent gift for Christmas and birthdays,for boys,girls,family,and friends Specification: Bluetooth-compatible version: V5.3 Solution: JL7008 Bluetooth-compatible protocol: A2DP/AVCTP/AVDTP/AVRCP/HFP/SPP/SMP/ATT/GAP/GATT/RFCOMM/SDP/L2CAP PROFILE Channel system: dual channel Battery capacity: 300mAh Speaker size: 40mm Bluetooth-compatible mode play time: 24h Noise reduction mode play time: 17h Talk time: 24h Charging time: 2.5h Speaker impedance: 32 Speaker sensitivity: 110db3db ANC noise reduction: 22db3db Optimal talk distance: