Sinclair C5 exactly this tack when he purchased Sinclair Vehicles' remaining stock, saying that his company would market them as "a sophisticated toy": "If you were a little boy, wouldn't you want your parents to get you one this Christmas?" His strategy was notably successful; Ellar sold nearly 7,000 C5s at up to £700 each, far more (and at a higher price) than Sinclair had ever managed. Some commentators attributed the C5's failure to problems with Sinclair's marketing strategy; only a year after the demise of Sinclair Vehicles, the "Globe and Mail" newspaper called it "one of the great marketing bombs of
Sinclair Research form of the "Z1 Micro AM Radio". In 2003, the Sinclair "ZA20 Wheelchair Drive Unit" was introduced, designed and manufactured in conjunction with Hong Kong's Daka Designs, a partnership which also led to the SeaDoo Sea Scooter underwater propulsion unit. July 2006 saw the release of the A-bike, a folding bicycle invented by Sinclair, which was on sale for £200. It had been originally announced two years previously. In November 2010, Sinclair Research announced the X-1 two-wheel electric vehicle, which failed to reach production. The Wrist Calculator was released by Sinclair Instrument in 1977. The MK14 (Microcomputer Kit 14) was