Wireless KG107 Bluetooth Earphone Sports Waterproof Bluetooth 5.3 Headset NECKBAND

the KG107 Dual Play Mode Wireless Earphones. They are a pair of Bluetooth neckband earphones designed for multi-device compatibility and versatile audio use.

Dual Play Mode: Supports both wireless Bluetooth 5.3 connectivity and a hidden TF/SD card slot, allowing you to play music directly from a memory card without a phone.
Magnet Attraction Design: Features magnetic earbuds that click together to prevent tangling when not in use.
Connectivity: Bluetooth enabled and compatible with mobile phones, music players, portable gaming devices, and computers.
In-Line Controls: Includes a built-in microphone with buttons for call answer/end and muting.
Additional Functions: The device appears to support a memory card and includes an LED display. 
Specifications
Model: KG107.
Audio Quality: Hi-Res Audio capabilities.
Water Resistance: feature IPX5 water resistance, making them suitable for sports and outdoor use.
Battery Life: Battery & Charging: Offers long playback times, providing between 18 and 60 hours of continuous use on a full charge. It typically uses Type-C fast charging

How to Use

Power On/Pairing: Long-press the multi-function (middle) button for 2–3 seconds. The LED will flash red and blue to indicate it is in pairing mode. Search for "KG107" in your phone's Bluetooth settings to connect.
Music Controls:
Volume: Short-press the + or - buttons.
Skip Tracks: Long-press the + button for the next song or the - button for the previous one.
Play/Pause: Short-press the middle multi-function button.
Calls: Short-press the middle button to answer or end a call; long-press to reject an incoming call.
Language Switch: If the voice prompts are in the wrong language, double-clicking the power button while in pairing mode (but not connected to a phone) may switch between English and Chinese.