The Plantronics BackBeat GO 600 is a pair of wireless headphones that deliver an immersive, over-the-ear audio experience. It lasts for up to 18 hours on a single charge. The headphones feature Advanced Acoustic Technology that delivers a rich, balanced sound to keep you focused and inspired. The lightweight memory-foam earcups isolate passive noise for distraction-free listening. Adjustable EQ Setting lets you switch from balanced mode to bass boost mode for an all-consuming audio experience.. . BackBeat GO 600:. . |Over the Ear Wireless Headphones |Advanced Acoustic Technology . - Delivers the Right Balance & Deep, Rich Sound|Memory Foam Earcups. - Listen for Hours in All-Day Comfort & Sound Isolation|Multiple Bluetooth Connections . - Bluetooth 4.1, HFP 1.6, HSP 1.2, A2DP v1.2, AVRCP v1.4|40 mm Speaker Drivers. - With Bass Tube Design|Up to 18 Hours Listening Time|Up to 20 Days Standby Time|90 Minutes Charging Time|Up to 33 ft/10 m Wireless Range|Two EQ Profiles . - Choose Between Bass Boost or Balanced Mode with the Adjustable EQ Setting |Multi-Point . - Two Devices Can Be Connected Simultaneously|Frequency Response: 50-20,000 Hz|Foldable Earcups |On-Ear Controls . - Play/Pause, Skip Tracks, Adjust Volume, & Take Calls Easily|Custom SBC Audio Codec |Speaker Sensitivity: 92 dBPL |Speaker Impedance: 32 ohms|Harmonic Distortion: <3%. .