Ukulele.

Technical description: Soundboard, back, sides neck and head of Koa. Soundhole 43.3mm diameter. Bridge of hardwood, possibly Koa, with tie slots to attach the strings and a raised piece at the front acting as the bridge. Three thin pale wood bands around soundhole. Pale wood at bottom, approximately 6mm wide. Heel flows smoothly into the neck, and neck flows into the head. Four friction pegs of hardwood, possibly a type of rosewood. 12 bar frets of brass, 0.8mm diameter. Neck 35.5mm wide at nut, 48.9mm wide at body join.