Some more details: Model: RSZ Color: Lamborghini-green Bought in summer 2014, got a totally new battery in 2015 (within guarantee) Engine upgrade: 60v2000w (speed 80km/h) Battery: LI-ON 60, 30AH (50 km range) Suspension upgrade: Gas spring shock absorbers Brake upgrade E alarm Lock (U Lock) Buying price 11,000 RMB Selling price: 7,000 RMB (-40%)