Plantronics Voyager Focus 1 (USA used stock)

Description

Bluetooth v4.1 & USB Connectivity, Up to 12 Hours Talk Time, Up to 150′ (47 m) Roaming Range, Active Noise Cancelling Technology, SoundGuard Hearing Protectio, Leatherette ear cushions.
Built for UC applications and softphones from Avaya, Cisco, Skype and more with a high-quality stereo design provides hi-fi stereo sound and an immersive audio experience.
Works seamlessly across laptops, Bluetooth-enabled desk phones, mobile phones and tablets: Sensors answer calls by simply putting on the headset, mute by taking the headset off and pause/resume music
Enhanced voice alerts announce caller ID, mute and connection status, talk time level, Dynamic Mute Alert feature senses and alerts you when you try to talk when muted.