It can prove difficult getting all the features you want in a Bluetooth speaker while keeping it affordable, but that is what Inateck has attempted to do with its Mercury Box. Made of anodized aluminium, this compact wireless speaker is certified IPX5 waterproof, packs two strong five watt drivers into its casing and has a battery life that is said to last up to 15 hours on a full charge.

And it claims to do all this for as little as £40.