KA-SWB Waterman Soprano Ukulele Sea Foam Green. Inspired by the 1950’s Maccaferri ukulele, the Waterman Soprano uke was built with a focus on the outdoor lifestyle. The Waterman is a high-quality, affordable ukulele that sounds great and stays in tune. It's the portable, take-anywhere ukulele. Take it to the beach, the river, the lake, the mountains—take The Waterman anywhere. It’s your uke for the road.