Up to 37 hours battery life Great for flexibility in noisy offices Bluetooth, up to 30m Connect to up to 2 devices Built to last 2 year warranty Passive Noise-Cancellation Busylight visible from all angles On-ear wearing style Fast charge Great call.Outstanding outcomes require outstanding call performance, and seamless, professional audio makes all the difference. We took the incredible call performance of our world-leading Evolve Series, and we made it even better, building in three strategically placed powerful professional microphones and adding our advanced digital chipset and latest signal processing technology. The result is outstanding call quality, every time.Its not just a great call. Its the new standard of great calls.UC-certified means UC-satisfied.Satisfaction guaranteed isnt something you hear very often these days, but were bringing it back; Evolve2 65 works with all leading Unified Communications (UC) platforms, for truly seamless collaboration.If your UC platform