About this item EASY PAIRING 5.3 BLUETOOTH HEADPHONES: Upgraded 5.3 Bluetooth technology offers a stable connection with lower power consumption and a range of up to 15m. Experience low-latency audio quality with perfect audio and image synchronization. Simply remove the headphones from the charging case, and they will automatically connect to your device's Bluetooth. Click on 'A7 Pro' to connect. Left and right ear can switch freely. PROFESSIONAL TUNING HIFI STEREO: These wireless earbuds feature a high-quality chip and a 13.2mm dynamic driver, providing high-resolution acoustics. Enjoy HIFI stereo surround sound, enhanced bass, and intricate sound details, making them an excellent choice for immersing yourself in music. POWER ALL DAY: These Bluetooth headphones offer up to 40 hours of playback with a large-capacity charging case. Each earphone can be used for up to 6-8 hours. The charging case includes a universal USB-C charging port, allowing for a full charge in just 45 minutes. En