Specifications
Material: Aluminum Alloy + Stainless Steel
Process:Anodized
Product size:300*77*125mm
Parts:295pcs                                                    
Track weight:200g
Number of tracks:2 sections
Track length:32cm
Charging voltage: DC 5V,
Lithium Battery Capacity:3.7V, 450mAh
Charging time:2 hours                                            
Working time:1.5 hours
Assembly time:about 4 hours
Assembly difficulty:IV grade
Metal Box Size:342*242*120mm
G.W:2.4 kg

Specification: 
Material: Aluminum Alloy + Stainless Steel + Engineering Plastics
Process: Anodized
Product size: 245*107*134mm
Parts: 350pcs
Charging voltage: DC 5V,
Lithium Battery Capacity: 3.7V, 2x450mAh
Charging time: 2 hours
Working time: more than 1 hour
Assembly time: about 4 hours
Assembly difficulty: Ⅲ grade
Metal Box Size: 342*242*120mm
G.W.: 2.4kg
Suitable age: above 14 years' old

Specifications:
Material: Aluminum Alloy + Stainless Steel +Engineering Plastics
Process: Anodized
Product size: 225*123.5*102mm
Charging voltage:  DC 5V,   
Lithium Battery:  3.7V, 2x450mAh
Charging time: 2 hours                                            
Working time: 1.5 hours
Assembly time: about 3 hour
Bluetooth remote control distance: 8m-10m
Assembly difficulty: Ⅲ grade
Gift Box Size: 288*198*90mm
G.W.: 1.5kg
Suitable age: above 14 years' old

Specifications:
Material: Aluminum Alloy + Stainless Steel + Engineering Plastics
Process: Anodized
Product size: 340*167*143mm
Parts: 246pcs
Charging voltage: DC 5V,
Lithium Battery Capacity: 3.7V, 2x800mAh
Charging time: more than 2 hours
Working time: 1.5 hours
Assembly time: about 4 hours
Bluetooth remote control distance: 8m-10m
Assembly difficulty: IV grade
Metal Box Size: 342*242*150mm
G.W.: 3.4kg                                                    
Suitable age: above 14 year old

Specification:
Material: Aluminum Alloy + Stainless Steel+Engineering Plastics
Process: Anodized
Product size: 110 * 94 * 133mm
Parts: 157 pcs
Charging voltage: DC 5V, 
Lithium Battery: 3.7V, 2x450mAh
Charging time: 2 hours
Working time: 1.5 hours
Assembly time: about 2 hours
Assembly difficulty: Ⅱ grade
Gift Box Size: 262*216*71mm
G.W.: 1.6KG
Suitable age: above 14 years' old