Here's a full tried-and-tested guide to the best handheld vhf radios on the market, and Sam Fortescue's tips on safe communication at sea.

Jack Dorsey just launched an app called Bitchat. This is a peer-to-peer messaging service that uses Bluetooth.

Head over to Amazon to get the Marshall Emberton II Portable Bluetooth Speaker for $95, which is 47% off its usual price of ...

Thanks to a current Walmart Flash deal, you can snag the $150 Oraolo IPX7 Bluetooth Speaker for only $19. To pump up a crowd, ...