Plantronics was proud to present its BackBeat Go Bluetooth in-ear headphones last year, but it's also aware improvements are always welcome. To that end, the company's ready to show off its second iteration: BackBeat Go 2. P2i moisture resistance and reworked internals for improved sound back up the sporty wire-behind-the-ear design and fit stabilizers -- look out, Jaybird. Not only does the hardware remember up to eight devices, but a DeepSleep mode shuts it down if you walk out of range without turning the power off, allowing it to sleep for up to six months. The internal batteries squeeze out about 4.5 hours of playtime for music, and an optional SKU with a microUSB charging case can provide about two and a half refills. As you'd expect, an inline remote keeps you in control of your playlists and calls, while DSP enhances incoming and outgoing sound. Ears perked? The headphones will be available starting today at various retailers in your choice of black or white priced at $80 for the headphones and $100 with the charging case.