The Krundaal Bikini is a distinctive electric guitar, with an attached amplifier, shaped like a motorcylce tank and wheel. It has  two single coil Davoli pickups and a bridge with a stylized W (for Wandre the guitar's designer). Controls are on-off switch, volume and pickup selector. The batteries supplying the Davoli Krundaal CT 642 amplifier, are in the body.

There were two distinct versions of the Bikini. The earliest one (circa 1962/1963) has a thin-line body with binding, with in different colors for the guitar and amplifier. The amplifier grid has radiating spokes and the headstock (and possibly neck) is made from aluminium. The later model (circa 1965) has a changed amplifier grid, a different battery compartment, conventional headstock and has matching color on the amplifier and guitar.

Picture from Wilder-Davoli