• Bluetooth Version: v5.3 (JL AC6983D2 chip) for energy efficiency and a stable 10-meter range. • Audio Drivers: 13mm moving coil speakers providing dynamic stereo sound. • Frequency Range: 20Hz – 20,000Hz. • Impedance & Sensitivity: 32Ω ± 15% / 98dB ± 3dB. • Water Resistance: IPX5 rated (sweat and splash proof). • Weight & Dimensions: Total weight is 50g (each earbud is an ultra-light 4g). Case size: 58 × 49 × 25mm