2 to 5 business days
Rejecting calls: Press and hold the switch button for 1.5 seconds and let go.
Redialing: Double click the switch button.
Chinese-English switching: Double click the switch button.
Voice assistant: Press and hold the switch button for 1 second and let go.
Connecting two phones simultaneously
Clear pairing list: No connection (Hold and press the switch button and volume-button for 3.5 seconds.)
Charging: Any state (Use a charger to charge it.)
Clothing Clip: Fasten the clip to your shirt or wherever it is convenient to keep the headphone cable out of the way, making any workout more enjoyable.
