UNBRANDED NEW Features & details 【Superior Sound Quality】Combining biological diaphragm with excellent 6mm speaker driver, the Bluetooth headphones provide you with rich, clear, authentic sound and powerful bass performance, you can immerse yourself completely into the music. 【25 Hours Long Playtime】A single charge gives you a full 5 hours of listening, while the charging case extends that to 25 hours to keep you going throughout the day. When you're in a rush and need power fast, simply charge on the go and take pleasure in your Hi-Fi and deep bass music anytime and anywhere. 【Ergonomic Design & Comfortable Fit】Extremely lightweight (only 4g per earbud) and ergonomically designed in-ear earbuds ensure a secure, comfortable fit to your ears and greatly improve your sports and workout experience. Besides, different sized ear tips and in-canal cable-free design provide more choices as you like. 【One-Step Paring & Easy Operation】The Bluetooth earphones will automatically pair with each other when you take them out of the charging case. After first time connected, the headphones will automatically connect to your last paired device. Moreover, the user-friendly multifunctional button on each earbud makes all operations easy.