The LG HBM-770 looks a lot like its cousin, the LG HBM-755, and it has similar features. However, the HBM-770 Bluetooth headset comes with echo cancellation and noise suppression, which makes it a little better than the other LG headsets. It's also a bit pricier at $79.99.
The HBM-770 looks a bit like the skinnier, sleeker, and more sophisticated version of the HBM-755. It has the same smooth electric blue reflective coating, but is decidedly blockier around the edges. Measuring 1.7 inch long by 0.75 inch wide by 0.4 inch deep, the HBM-770 is also just as lightweight and compact. The top portion of the front surface can be pressed down to act as the multifunction key, and there's also a blue LED that flashes when the HBM-770 is powered on. The volume rocker sits on the left spine, and there's a dedicated power button on the top. All keys are easy enough to press, even when the headset is worn on the ear. The charger jack is on the right.
The earpiece and flexible plastic ear loop is similar to that on the HBM-755 as well. The earpiece has a decent fit in the ear, though we would've preferred something a bit smaller. The plastic ear loop was great--it's so flexible and thin that it keeps the headset secure around the ear and still feels completely comfortable.
Features on the HBM-770 include the typical answering, rejecting, and ending calls, voice dial support, last number redial, call waiting support, the ability to transfer calls from the headset to the phone and vice versa, plus a low battery status indicator.
We paired the LG HBM-770 with the RIM BlackBerry Pearl, and it went very well, thanks in part to the LG headset's Easy Pairing process--just power it on, and activate the Bluetooth pairing mode on your phone. The call quality is where the HBM-770 outshines the HBM-755. The HBM-770 has echo cancellation and noise suppression, so callers could hear us much clearer. Voice dialing went without a hitch as well. It still doesn't perform very well in a windy outdoor environment however.
The LG HBM-770 has a rated battery life of 6 hours talk time and 14.5 days standby time.