We've come a very very long way since the days of boomboxes and bags filled with D-cell batteries and that is more than evident in the latest speaker from NudeAudio, the Super-M.
The compact pocket-able Bluetooth speaker is no slouch in the audio department. It houses four full-range neodymium drivers on both sides of the device and two passive radiators. Those drivers are also coupled with amplifiers and a lithium-ion battery that will have you going for eight hours of playback. It also doubles as a speakerphone and has an IPX-5 rating meaning its water and sand-proof.