Plantronics CS520/HL10 Wireless Headset

 Specifications:

• Talk time - up to 9 hours
• Headset weight - 94 grams
• Wireless frequency - DECT 6.0, range up to 350 ft
• Audio performance - Narrowband or wideband: up to 6,800 Hz
• Hearing protection - SoundGuard DIGITAL: protects against sound levels above 118dBA; Anti-startle detects and eliminates any large sudden increase in signal level; Time-Weighted Average prevents average noise level from exceeding 85dBA
• Limited warranty - 1 year