1. Frame: Aluminum alloy flat-handle road bike frame  
2. Front fork: Full-aluminum lockable shock-absorbing front fork  
3. Motor: 36V*250W rear-mounted motor  
4. Battery: 36V 7.8AH lithium battery (built-in type)  
5. Controller: 250W sine wave torque bottom bracket type  
6. Instrument: Central color screen  
7. Speeds: SHIMANO 21-speed  
8. Packaging method: 85% pre-assembled package  
Theoretical cruising range: 50km