First the good points: The part does what it should. Without additional software (on Android) operates there as Head Phone - (- hand) and set as a Bluetooth headset with Media Player control. The sound is good, the battery life as well. The supplied headphones deliver quite decent sound. The downsides: The Bluetooth range is rather mediocre. The OLED display is compared to the puny body and sunlight barely legible. To grasp the full functionality (call logs, time, messages etc.), you have to install a kind of drivers and the entire Managing suite for Sony Smart Watches. Typical Sony smartfone software solution - creepy. And then here already much-discussed topic feel: In addition to a current Xperia Z really affects the SBH52 like a gumball machine. Plastic everywhere you understood, the USB cover does not close flush (actually unnecessary because eh not water / dustproof). What if you had it all to do! Sony kanns, but as you can see here wanted the current Smartfones they obviously do not. The display could easily be 4x as large and even brighter (color and touch does not have to be). The case is likely to be like aluminum and go at least a little toward iPod nano. This idea could have been done a gadget that suits high-end smartphones and less quality enhances. But well, the idea is on the market. If sichs sold well enough to safely find another manufacturer who makes what nobles of it. The SBH52 is only worth its price because there is still (as of early 2015) no comparable device. If time is because competition can be the part no longer safe to sell for nearly 70, then it has to fall well below 50. Especially with the increasing market shares of unwieldy phablets seh good opportunities for chic smartphone handsets.