A technology for wireless communication between devices over short distances. Bluetooth® uses radio waves at the appropriate frequency to transmit data. It is currently used in most electronic devices, including phones, speakers, tablets, laptops, headphones and watches.

KoolSync™ allows two devices to be paired wirelessly in True Wireless Stereo (TWS) mode, creating a spatial stereo sound effect. This solution enables music to be played simultaneously from two speakers, which boosts the volume and enhances the listening experience. It works particularly well outdoors, where a louder and more immersive sound is essential.