The POLY Blackwire 5210 Headset is ergonomically designed for all-day comfort, making it ideal for long workdays, meetings, and customer calls. It features 3.5mm connectivity for plugging into compatible devices like PCs, Macs, tablets, or cell phones. This headset is designed to make the most of your meetings and provides the audio quality Poly is known for. It is compatible with most popular collaboration platforms.