Style: In-Ear Communication: Wireless Connectors: None Wireless Type: Bluetooth Vocalism Principle: Dynamic Control Button: Yes Active Noise-Cancellation: Yes Function: Sport, HiFi Headphone, Common Headphone Plug Type: Wireless Line Length: None Splash proof: Yes Model Number:A10S Support Apt-x: Yes Support Memory Card: No With Microphone: Yes Instructions for use Voice assistant ：Any left/right ear for 3 seconds Play/pause/music: Touch any left/right ear once in playback mode Next track: Right ear touch 3 times Previous piece: Left ear touch 3 times Volume: Right ear touch 2 times Volume-: Left ear touch 2 times Parameters: Model: A10S Bluetooth: 5.0 Chip: AB5376A Bluetooth Protocol: HFP / A2DP / HSP / AVRCP Transmission Distance: up-to 10m Earphone Battery: 40mAh Charging Box Battery: 1800mAh (18650) Earphone Charging Time: 1.5 Hour Charging Case Charge Time: 2 Hours Talk /Playing Time: 3-4 Hours Standby Time: 80 Hours Note: The headset has a built-in high-quality lithium battery. For better battery life, please charge the headset for 60 minutes when using it for the first time.