This is the returner R3 2206 Blue top brushless motor, also known as the ZMX Fustion V3.  Built by bortherhobby this tiny motor produces some serious thrust to rival that of the famous RS2205 Red bottom motors from emax.

Specifications

• Rotor: N52H arc magnets 
• Wire AWG: 20AWG
• Stator: 0.2mm Kawasaki silicon steel
• Bearings:  Japanese NSK 3 x 8 x 4mm
• Base casing: Al 7075
• Bell cap:Al 6063
• Weight:29G
• Configuration: 12N14P
• Supports 3 and 4 cells lipo batteries.