which treadmill to buy

{"title":"Touch Screen Commercial Treadmill For Gym \/ Walking Impulse Aluminum Alloy Column Treadmill Machines","imgUrl":"https:\/\/img.silkroadsl.com\/nimg\/fc\/8d\/fc6ae49056c8c8101e69687c2c1e-200x200-1.jpg","attrs":{"Price":"1400-1800 dollars\/piece","Brand Name":"LJ FITNESS","Model Number":"LJ-9507B","Minimum Order Quantity":"1","Delivery Time":"10-20 days","Certification":"CE,ISO","Place of Origin":"China","Payment Terms":"L\/C, D\/P, T\/T, Western Union, MoneyGram,","Supply Ability":"3000 pieces\/month","Packaging Details":"wooden cases","Touch screen":"21.5 inches Android system","Display":"Time,spead,gradient,distance,calorie,heart rate;","Slope":"0-15%","Speed":"1-20km\/h","Motor":"3HP(voltage\/current:AC220V-250V,8.6A)","Numeric keypad":"Use for speed one-button selection,parameter setting","Pattern":"Mechanical buttom,LED screen,stable and reliable;aluminum alloy column","size":"2210*920*1700mm","Effective running area":"1650*570mm","N.W\/G.W":"210\/230KG"}}