Japanese brand, Jumpu, debuts its compact audio device that will satisfy the needs of adrenaline junkies-slash-audiophiles. Living up to its definition of power and strength, the Tsuyoi-S is built for rugged outdoor activities like biking. This wireless speaker is IP65 water-resistant that gives a superior bass sound. It can also be used in two ways: either through a 3.5mm audio jack or via Bluetooth connection with a distance of up to 10 meters. Resting on its internal body is a 15000 mAh lithium battery that is enough for streaming your music playlist and making crystal clear calls directly on your mobile device, all day long. Indeed, it was designed with tough aesthetic.