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Operating Time: Each earbud has up to 7 hours of listening time, if the left and right earbud are used alternatively, the listening time can reach 14 hours.
Feature: - Lightweight and portable, can be tied up, stand up on the table, worn on the hand.
- Built-in battery, three wind-speed adjustment.
- Velcro fixed use, suitable for strollers, shopping carts, brackets, wrists, etc.
- It can be adjusted up and down, left and right, rotated 360 degrees.