FF20 Polar features 48V 20.8Ah dual batteries. Double fun with 100% longer range. With a maximum cruising range of 160km, you can rest easy knowing your bike won't run out of power soon. Depending on the situation, you can mix and match various accessories to install front and rear racks or bags for freight, parent-child travel, camping excursions, etc. The 500W strong hub motor and 20*4.0 inch fat tires get you to all the spots in an easy no fuss fashion. Hop on and go to feel the wind in your face, the wonder in your eyes, and everything that life on two wheels has to offer. 48V 500W Strong Hub-Motor The 500W geared hub motor with a maximum torque of 65N.M powers up to 860W peak output to deliver enhanced climbing capabilities. The maximum unleashed speed goes to 40km/h. With the detachable throttle handle, you can switch among pure electric mode, power-assisted mode and manpower mode at any time. 48V 10.4Ah*2 Dual Batteries FF20 Polar comes with a tube and frame batteries that can be used separately or together. The dual-battery equalizer we use can reduce the current intensity of each battery, increasing battery service life and mileage up to 160km in PAS mode. LCD Color Display The high-definition LCD display offers a variety of features with easy control, and presets 5 speed levels. The large-screen LCD smart display shows various data such as speed, battery, mileage, and gear. It has a walk assistance mode and cruise control function to help your riding whenever you need. FF20 polar not only meets your needs for long rides and powerful performance, but is also comfortable. An 40mm front suspension fork, higher volume tires, and a wide highly resilient cushion smooth out harsh bumps and provide long-time comfort. CHAOYANG 20*4.0 Fat Tires 4.0 fat tire with increased friction that can adapt to a range of riding conditions, including flat ground as well as snow, sand, mud, and gravel roads. Double Disc Brakes Powerful disc brakes reign in your speed. Power-off brake levers with large 160mm rotors F/L which can stop the bike in more effective way, even in loose terrain. Quick Fold Design, Easy Transport Creating a low-step frame design opens up the roads for those who are prevented from hopping on a high frame. It can folds up to an ultra-compact size, is easy to transport, making it ideal for vacation travel and commuting. Travel with Peace of Mind 15W and 5W super bright front light and rear brake light escort your night riding journey. 1.Motor rated power (W)：500W 2.Rated voltage (V)：48V 3.Battery type：Lithium-ion battery 4.Battery capacity (AH/Wh)：10.4Ah/499.2Wh*2 5.Default maximum speed：25KM/H 6.Max range for assisted mode：140-160KM 7.Max range for pure power：95-115KM 8.Max climbing Gradability：25° 9.charging time：3-4h each battery 10.Display type：LCD Display 11.Transmission：SHIMANO 7S 12.Brake type：Mechanical disc brakes 13.Waterproof grade：IPV4