Transmission: auto-wave ?

[tommy.]

Anyone know what a auto-wave transmission is I can't find any technical info about it.

Model:1P50FMG-C1
Displacement: 97ml
Compression ratio: 8.6:1
Primary reduction(auto clutched): 4.059
Bore*Stroke: 50mm*49.5mm
Max. Net Power & Rotating Speed: 4.4kw/7500r/min
Rated Power & Rotating Speed: 4.1kw/7500r/min
Max.Torque & Rotating Speed: 6.5N.m/5000r/min
Min. Fuel Consumption: ≤367g/kw.h
Idling Speed: 1500r/min
Ignition: CDI
Starter: Electric starter/Kick starter
Lubrication: Pressure/splash
Transmission: auto-wave