Charge on-the-go & Fast Pairing - Wireless earbuds can last for over 4 hours playtime from a single charge and 20 extra hours in the compact charging case. The one-step pairing technology enables the earbuds to get seamlessly paired and connected white opening the charging box and only one more step to connect them with your bluetooth function enabled devices, such as iPhone, Samsung, Android, Windows, iPad Pro, etc. Superior Sound Quality & Upgraded Bluetooth 5.0 - True wireless earbuds with 3D Sound Effect & Binaural Stereo Effect and HD rendering technology produce incredible deep bass sound quality. Ergonomic Design & Comfortable Fit - The portable compact charging case is lighter and smaller than others. Weighing only 2.9g per earbud and with a great ergonomic design, our wireless earphones is suitable for most people in custom fit, snugly nestle in your ears, offering long-lasting comfort and a secure fit during workouts or sports. IPX7 Waterproof & Free Return Policy - IPX7 waterproof sports bluetooth earphones and charging case inner Nano-coating makes it possible to stand up to sweat and water splash. A good companion for outdoor running, jogging, cycling activities and workout. Smart Touch Control & Single/Dual Mode - Easily control your music, calls, and voice assistant functions with Smart Touch Control. You can use one earbud independently or two earbuds at the same time to suit your different needs.