Specification: 
 Displacement: 4.53 cc. / 0.277 cu. in.
 Bore: 18.7 mm. / 0.763 in.
 Stroke: 16.5 mm. / 0.65 in.
 Practical RPM: 2,500 ~ 16,000
 Output: 0.70 BHP / 15,000 RPM
 Weight: 221.1 g. w/muffler / 7.80 oz.