Truly Wireless Speaker enables you to easily connect Olsenmark Bluetooth speakers via Bluetooth 5.0 and form a truly wireless stereo left channel and right channel and get the stereo sound effect in a few seconds. Its design makes it look very elegant and handy. You can easily carry it anywhere you go, use it in your car, on a trip, at an outdoor party, while walking, and more. Bluetooth offers better signal quality for noise-free audio. Not only supports hands-free calling, but also supports FM radio.The audio cable can be connected to the computer and the car, and the TF card and USB can be plugged in to play music. Compatible with all Bluetooth-enabled devices, make music more wonderful and make your parties or picnic time more shining, full of youthful style, glowing you're energetic. Made up of ABS material it is a polymer known for its strength and durability. This device is resistant to breakage and built to give a long-term performance. It has Output power: 5W*2, Loudspeaker: 4 Ohm/5W*2, Input power: DC5V.