Calus Air-500 Wireless Earbuds.

Connectivity: They are wireless earbuds that use Bluetooth technology for a stable connection. Sound Quality: The product is advertised to have Hi-Fi (high fidelity) surround sound quality. Battery Life: The earbuds offer approximately 5 hours of listening time on a single charge, with a standby time of over 20 hours. Design and Controls: They feature a compact charging case and typically use smart touch controls for managing music playback, volume, and calls. Microphone: A built-in microphone allows for hands-free calling.