Amazingly looking and sounding device! It's loud, without any distortion, there is a real bass, delivered by the two passive radiators on the both sides (top on the left, bottom on the right), the built-in equalizer mode sometimes it's not even needed, the build quality is not in any way worst, but even equal to the look and feels of it's most expensive competitors and not at last the device is presented with a premium packaging! For the promotional price of $40 during the Spring festival and delivered to Bulgaria in no time - one week only with the Singapore post, this is a must have and a real steal for any admirer of the quality sound and built! Of course, I didn't check the IPX7 capabilities, simply because there is a really good review on YouTube from this russian guy Pasha Es, who lives in Germany and tortures the two paired pogether E30 speakers on the beach and underwater without any security issues literally for hours, check it for yourself - there are only a few reviews available there for now, which is a real shame for such a good device! As for the battery life, I am playing for two days on the middle to higher volume and it's still stays on 2 dots, since I haven't charged it yet, which leads me to another great feature - there are four lightning dots on the bottom of the body for the battery level and every time the volume up or down is pressed, they're showing the current battery level - isn't that cool and also helpful?! Also, after a period of inactivity, that I didn't measured, the speaker turns itself off for saving the battery life. The manual suggests, that you should charge your device every 45 days, when you not using it for a long time, to extend the battery life. The box also contains clever and really unusual, cool looking black carabiner hook, along with the standard bunch of micro usb charging and 3.5 mm male-to-male (for the aux input) cables are also presented, plus manual and the warranty card, the premium looking and strong giftbox ...