Environmental Noise Cancellation for HD Calling 1.Bluetooth 5.3 2.AAC,BSC dual connection 3. 4-mics Environmental Noise Cancellation 4. 0.038"low latency 5. 45hours of battery life 45 Hours Long Battery Life ENC with 4 mics & HD Call 10mm Big Dynamic Speaker Driver SmartTouch Control V5.3 Bluetooth Chip APP Customizing Excellent Sound Quality Powerful bass and a well-balanced supreme sound quality by AAC Code. Four ENC Mics, this time, lound and clear Dual-mic system to remove background noise thanks to beamforming technology and AI Neural Network Algorithms to dynamically track your sound. Intelligent noise-cancelling system allows you enjoy your music and HD calling. Smooth & Enhanced Connection Wireless 5.3 ensures stability, higher efficiency and better anti-interference when connected, about 50ft radius for connection. Ergonomic Design 3.5g lightweight bud with snug and secure fit for outdoor activities. Mini & Long battery life 10hours on single charge playtime. (Left 5 Hour+ Right 5 Hour) Additional playtime of up to 35hours 300mAh Charging Case.Long battery life Making a total of up to 45hours of playtime. APP Customizing Performance Parameters Model Name A8 Talk time 5 hours Net weight 53 grams Charging input 5V1A Operating voltage 3.7V Headphone battery 40mAh 3.7V Charging case battery 300mAh 3.7V Charging interface Type-c Earbuds Charging time 90 minutes Charging case charging time 90 minutes Charging Case Dimension 61.6*59.6*30.8mm Earbuds Dimension 29.69*22.29*20.99mm General Functions&Operations Play/Pause Tap once any earbud Call answering Tap once any earbud Reject Incoming call Long Press any earbuds button for 2 seconds Previous song Long Press left earbuds button for 2 seconds Next song Long Press right earbuds button for 2 seconds Google Assistant/Siri Tap 3 times on left earbuds Increase Volume Double taps the right earbuds Reduce Volume Double taps the left earbuds Enter Gaming/Music mode Tap 3 times on right earbuds Exit Gaming/Music mode Tap 3 times on right earbuds