Check the listing for details. Plantronics Poly Blackwire USB Stereo Headset BW3315 + Volume Control BW3300. Color: Black, Condition: Used. Listed at 13.23 USD. Enhance your communication skills with the Plantronics Poly Blackwire USB Stereo Headset BW3315. This over-the-ear headset comes with a detachable cable, adjustable headband, and leather cushions for a comfortable fit. With its push-to-talk (PTT) feature, you can easily control your audio without any hassle. The built-in microphone and in-line control make it perfect for both personal and professional use. The headset is compatible with USB, 3.5mm jack, and USB-A connectivity, making it versatile and user-friendly. Its sleek black color and double earpieces add to its style and functionality. The Plantronics Poly Blackwire USB Stereo Headset BW3315 is a must-have for anyone who wants to communication effectively and with style.