Features: Easy Volume Adjustment: Volume can be smoothly controlled by simple screw rotation for personalized sound. Long-Lasting Rechargeable Battery: Energy-saving built-in 300mAh battery supports extended usage and reduces charging frequency. Fast Charging & Extended Standby: Fully charges in 1.5 hours and offers up to 20 hours of continuous use. Lightweight and Comfortable Fit: Each device weighs only 3 grams, designed for comfortable and discreet wear with multiple earplug sizes. Compact and Portable Design: Small charging case ensures easy carrying and invisible wearing anytime, anywhere. .
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