TYPEC charging port with a largecapacity battery. Supports multiple charging methods including direct charging, power bank, car charger, and computer charging. fidelity sound quality. Delivers clear audio and natural voice reproduction, providing a call experience that feels like a facetoface conversation. Wireless Bluetooth link with multipoint support. Can operate as a standalone device, or pair two mobile phones simultaneously. Also capable of linking a mobile phone with a Bluetoothenabled walkietalkie. Product features: wireless distance with Ktype adapter. When using with a walkietalkie, insert the walkietalkie and turn on the switch to use. For traditional wired headphones, there is a 10meter wireless distance. Use scenarios In the car or on the go: Charge via TYPEC from a car charger or power bank, connect to two mobile phones for calls, and enjoy clear, natural sound on the move. Field work with a walkietalkie: Use the Ktype adapter to connect to a walkietalkie and wired headphones; enables wireless operation up to 10 meters while maintaining voice clarity. Remote work or daily commuting: Pair with a mobile phone and a secondary device (another phone or Bluetoothenabled accessory) for seamless multipoint calls, while benefiting from the fidelity audio and flexible charging options.