Up to 15hrs Playtime: Built-in 120mAh battery and 1-2 hours quick charge offers enough playtime for music listening or phone calls. | Stable and Secure Connectivity: Upgraded 5.0 Bluetooth technology provides stable, fast-speed connections, allowing you to enjoy music hassle free. Compatible with PC & phones. | Amazing Sound Quality: Designed with 11mm copper speakers complete with enhanced bass and reduced distortion. | IPX7 Waterproof Design: Internal Nano-coated design ensure waterproof function, great for exercises; making your earphones more durable to use. | Excellent Noise Cancellation: Latest RCV technology enables clearer phone calls. Leaving you with superior sound and passive noise cancellation. Great choice for offices and home-based agents.