Quick Details Certification:ROHS ,CE Is wireless:Yes Wireless Type:Bluetooth Support Memory Card:No Vocalism Principle:Other Volume Control:Yes Control Button:Yes Codecs:None Brand Name:Trulyplus Model Number:H-001 Style:Headband Communication:Wireless Use:Portable Media Player, Mobile Phone, Aviation, COMPUTER, Dj, Gaming, Sports, Audiophile, Travel, PROFESSIONAL, HiFi Headphone Function:Waterproof, Noise Cancelling, Microphone Place of Origin:Guangdong, China Cord Length:None Bluetooth Standard:v5.0 Waterproof Standard:IPX-4 Active Noise-Cancellation:Yes Product name:Foldable BT 5.0 Headphone with ANC Active Noise Cancelling Key Feature:ANC Active Noise Cancelling Noise cancellation:28dB Wireless Version:V5.0 Working Time:Up to 40h(ANC),Up to 15h(BT and ANC) Battery Capacity:3.7V/500mAh Operation range:Up to 15 meters Noise reduction bandwidth:50-800HZ Support:Active Noise-Cancellation Plug:3.5mm+Type-C