bluetooth earphone, wireless bluetooth earphone, foldable wireless bluetooth earphone"1.Hi-Fi Sound Design: The Bluetooth wireless headphones has such features as a clear bass design and a 40mm oversized speaker. The superior sound quality design gives you a clear feeling of the changes in the treble and bass of the song, and bring you into an immersive closed listening environment. And the wireless headphones work with a built-in TF card slot, so you can enjoy music wherever you are.^2. Bluetooth 4.1 Technology: Bluetooth 4.1 provides you with a stable and fast Bluetooth connection. Once the bluetooth matched successful, there's a voice prompt in the headphones and the connection and battery status will be displayed on the screen of the smartphone. They can connect to the Bluetooth-enabled devices,such as iPads, iPhones, iPod touches, Android smartphones, tablets, etc.^3.Wireless Design: Bluetooth headphones, Wireless mode:With the Built-in 500mAh battery, The battery update to 24-hr of of music time / 28-hr of talking time on a single charge.^4. Fashion and Personalized Design: Concise appearance and stylish color scheme. As an eye-catching wireless headphones, they are adopted the popular color design,there 4 color options:White, black, White-gold,Black-white. ^5.We also pay attention to the customer experienceThese Over ear headphones combined with the custom fit sponge padding and adjustable headband,foldable design makes the wireless headphones easy to carry and take up no space.We aslo offer a free drawstring carrying bag.