Product Size: 59 x 19 x 18cm;Tire Size: 6.5?;Net Weight: 12 kg;Load Weight Limit: 20 ~ 100 kg;Motor: Brushless Motor,Website:http://www.cbtgdesign.com, 400~500 r/min;Power: 250W x 2;Voltage: DC36V;Transducer: Honeywell (Made in the USA);Max Speed: 12 km/h;Max Gradeability: 15�;�Battery: Lithium 4.4AH;Charging Time: 5 hours (standard) / 1 hour (quick charge);Max Range Per Charge: 20km;Charger: Balance Charger, AC 100-240V / 50-60Hz;Charging Protection: Over Current / Over Voltage / Short Circuit;�Applicable Temperature: -15 ~ 50�C;Special Technic:-Water Proof Tire;-Vector frequency conversion technology.