The Black & White Marbled series is a combination of the best selling models: The Razor Black meets The Special Edition Marbled, resulting in classy and one-of-a-kind visual patterns that elevate the best selling Wooden Sound System to the next level. - Handcrafted from 100% pure birchwood. Requires no batteries or power source. - Universal dock fits all smartphone models. - The unique acoustical properties of birchwood deliver a warmer tone, smoother highs, and more prominent bass. - Specially engineered inner sound tunnel and rings increase volume by 25 dB - an average sound increase of %400. - Comes with a limited edition screen-printed cloth package that looks beautiful on display. The Wooden Sound System is not just great for listening to music, but also in making phone calls easier to hear for both sides. It is a thoughtful and functional gift in these times of isolation. A companion to phone calls, camping trips, gardening activities, cooking sessions and more.