bluetooth, Microphone, wireless stereo, Waterproof, LED Display, Noise Cancelling, Support Xiaomi AI Assistant, Support other AI Assistant, Support Amazon Alexa, On-Ear Headphones, Support Apple Siri, Support Google Assistant, Over-Ear Headphones, Heart rate monitoring Portable Media Player, Mobile Phone, COMPUTER, Dj, Gaming, Sports, Audiophile, Travel, PROFESSIONAL, HEARING AID, For Internet Bar, For iPod, HiFi Headphone 3.5mm Connectors Control Button Is wireless Active Noise-Cancellation:NO Bluetooth Standard:None Battery Indicator:LED Material:ABS Style:Headband Support Memory Card:No Volume Control:Yes Wireless delay time:30 Ms Vocalism Principle:dynamic Cord Length:1.2 m Audio Cable Charging time:2.5hrs Working time:24 Hours Transmission distance:10-15 meters Standby time:300 hrs Sensitivity:103dB+/-5dB MaterialABS+PVC Support Memory Card:Yes Certificate:FCC/CE/ROHS/REACH Package Type:Gift box