Review on ADSDIA Bluetooth Earpiece V4.2 with Built-in Mic & IPX5 Waterproof - Wireless Headphones for Handsfree Calling, Noise Cancelling, Deep Bass - Compatible with iOS Android Phone - Perfect for Sports & Driving by Larry Sabey

This is the best I've had and the lowest price yet. I prefer a small single-ear device with an earhook; not for music, but for productive hands-free work in a busy, active lifestyle. Spent hundreds on expensive Aliph Jawbone, Jabra, Logitech and G-Cord devices. This device is the most convenient, it connects automatically when you turn it on or move away from the phone, seems to work from about 50 feet away, voices are clear (for both parties) and as a bonus, the music sounds more like high-quality headphones than cheap speakers. Since I tend to lose these pieces every 6-12 months I'm ordering two more before Revain stops carrying them.