Your neighbours will hate you

The Wonderboom from US firm Ultimate Ears is a highly portable Bluetooth speaker with a big sound that allows you to party on the go – even in the rain if you like.
Orb-shaped and flat at the top and bottom, it has a little carrying hook to hoist this petite 10293.5mm, 425-gram dream gadget around.
Despite the diminutive size, the speaker is a loudmouth. Its two 40mm active drivers and two 46.1x65.2mm passive radiators produce amazingly deep bass and overall sound quality at a sensitivity of 86dB and frequency response of 80Hz to 20kHz.
But the Wonderboom can be lonely at times, so consider adding a second one for a full stereo (and even louder) sonic experience.
The little beast is waterproof and dustproof. It can be immersed in water a metre deep for 30 minutes, meaning there’s no worry about it getting soaked on a rainy day.

The built-in battery will last up to 10 hours and is rechargeable via a micro-USB port, for which a cable is provided. (The port has a cover to prevent water from getting in.)

There are only five buttons running the speaker–oversized volume buttons, power, Bluetooth button and multi-purpose UE button.
Press and hold the Bluetooth button until your hear a tone and the speaker is ready to connect to your phone or tablet computer. It can pair with up to eight Bluetooth-enabled source devices, two sources at the same time. You can take turns streaming music from each device without having to disconnect and reconnect.
To pair two Wonderbooms, just press the UE button on both speakers at the same time.

This button is also used to control the music without having to pick up your phone. Press to pause and press again to resume. Double press to skip to the next track.
In my test I found the tiny speaker sounded very loud with clarity and impressively deep bass.
Ultimate Ears is a Californian manufacturer of custom inear monitor (IEM) speakers and earphone, founded in 1995. It was taken over by Logitech in 2008.
The Wonderboom comes in Stone (grey), Phantom (black), Fireball (red), Sub-Zero (blue), Cashmere (pink) and Lilac for Bt3,490. Grab one (or two) at any branch of IT City. 

KEY SPECS

- Sensitivity: 86dB
- Frequency response: 80Hz20kHz
- Driver: Two 40mm active
- Waterproof: IP67
- Bluetooth profile: A2DP
- Wireless range: 33 metres
- Power: 10 hours battery life, 2.8 hours charge time
- Dimensions: 102x93.5mm
- Weight: 425 grams