Dual Mode stereo headphones (both wire and BluetOoth) for smart working and remote teaching Wireless: wireless communication technology. Compatible with iPhone, Samsung, Huawei, Xiaomi and all Bluetooth enabled devices. Modern design with around the ear earcups for optimal comfort. Ideal for video calls from smartphones, tablets or computers: adaptable and removable microphone and volume limitation Play Time: Up to 18 hours of uninterrupted music. Talk Time: 18 hours.