LED Battery Display: Equipped with a digital display, you can conveniently check the battery level at a glance, ensuring you never run out of power unexpectedly Ergonomic Comfort Design: Built with a silicone skin-friendly comfort ring, it offers a comfortable fit even during prolonged use without causing ear fatigue 360° Panoramic Sound Quality: Provides immersive sound with high-quality Bluetooth-compatible 5.5 technology, delivering clear audio in an open-ear design Adjustable Ear Fit: The flexible structure allows for 180-degree rotation, making it suitable for both left and right ears, ensuring a secure and comfortable fit Long Battery Life: With a powerful 230mAh battery, it offers extended usage time, perfect for long business calls or workout sessions Specification: Bluetooth-compatible version: V5.5 Bluetooth-compatible distance: 10 meters Speaker: F16mm Battery: 230mAh Charging time: about 1 hour Battery life: 25 hours Frequency: 20Hz-20KHz Impedance: 32Ω Sensitivity: 85dB/mW Waterproof grade: for daily use Package included 1 x Bluetooth-compatible Earphone 1 x Charging Cable 1 x English and Chinese User Manual Other items not include Specifications Brand N/A Color Grey Packaging Type Colored Box Plug Type (For Supply) N/A User Manual (Language) English and Chinese Gross Weight 0.055kg Volume Weight 0.059kg Package Length 9.300cm Package Width 7.500cm Package Height 3.800cm