The Harman Kardon Neo Bluetooth speaker delivers flawless sound and is so small that it fits in one hand. The casing, which is made of durable metal, easily withstands scratches. Thanks to the robust carrying loop, it can also be quickly attached to a backpack or bag. The IPX7-certified speaker is waterproof and has a battery that provides ten hours of audio playback, plus a hands-free function with echo cancellation.