Specifications:
Brand: Happymodel
Material: 3K carbon fiber 
Type: 3.5 inch Frame 
Wheelbase: 150mm 
Bottom plate thickness: 3mm
Weight: 26gram
Flight control installation hole: 25.5mmx25.5mm and 20mmx20mm with M2 hole
Support camera: 14mm 
Recommended parts: (not included)
Flight controller: ELRS X1 or CrazyF411 Pro
Motor: 1404 KV3500 
Camera: 14x14mm 
Propeller: 3.5 inches
Battery: 4S 650mah~1100mah

Propeller Diameter: 3.5 inch       
Pitch : 2              
Blades : 3
Material : Poly Carbonate        
Weight : 1.5g
Hub Diameter : 10mm           
Hub Thickness:4.7mm           
Shaft :1.5mm

Mode: EX1404
KV option: KV3500
Configu-ration:9N12P
Stator Diamter:14mm
Stator Length:4mm
Shaft Diameter:Φ1.5mm
Motor Dimension(Dia.*Len):Φ17.8mm*17.6mm
Weight(g):8.7g
No.of Cells(Lipo):
KV2750 compatible with 4S Lipo
KV3500 compatible with 3-4S Lipo
KV4800 compatible with 3S Lipo

Package included:
4 x motor
4 x HQ Propeller
1 x Frame kit