50H Playing Time & HD Stereo Sound The true wireless earbuds come with a 500m Ah charge case, it can supply total 50 hours play times for earbuds. The earbuds will give you excellent stereo sound environment, that the heave low bass from the amazing earbuds will act your ears to enjoy the great music. Bluetooth 5.2 & Noise Cancelling Headphones Earbuds This Bluetooth Earbuds use most advanced Bluetooth 5.2 technology. Fast and stable transmission with 3D Stereo Sound and Heavy Low Bass. Noise Cancellation technology can reduce ambient noise and echo, offers Truly Natural, Authentic Sound and Powerful Bass Performance sound no matter in calls or in music time.