Plantronics Black-Wire C710-M Corded Headset

Specifications: 

• OPTIMIZED FOR UNIFIED COMMUNICATIONS
• Connects to PC via USB, mobile phone or tablet via Bluetooth
• Ideal for Users with extensive PC audio and some mobile phone communications
• Compatible with Windows® or Mac OS
• Talk time - Up to 10 hours, up to 10 days standby time, up to 6 hours listening time (A2DP)
• Wireless frequency - Bluetooth v2.1 + EDR
• Audio performance - Dynamic EQ, microphone frequency response 100 Hz–8kHz optimal for wideband voice telephony (up to 6,800 Hz, enhanced digital signal processing (DSP), noise-cancelling microphone, A2DP
• Hearing protection - SoundGuard®: Sound leveling for listening comfort and acoustic limiting for protection against sounds above 118 dBA (PC/mobile)
• SoundGuard DIGITAL®: Anti-startle protection detects and eliminates sudden increase in sound and limits the level to 105 dBA; Time Weighted Average (TWA) measurement prevents average daily sound exposure from exceeding 85 dBA (PC only)
• Limited warranty - 2 years
• Version optimized for Microsoft® Lync® 2010 and Microsoft® OCS 2007