Lady fat tire electric bike is popular with hidden battery style in EU.all parts is good quality brand parts . 1. frame use 26*4.0 kenda with 6061 Aluminum alloy frame . 2. motor use 36v250w / 48v500 /48v750w/ 48v1000w bafang motor power . 3. battery use 36v or 48v10.4ah /14.5/16ah panasonic or samsung lithium battery . 4, brake system use tektro mechanical disc brake or tektro hydraulic disc brake. 5, front fork use MOZO hydraulic alloy suspention adjustable front fork or RST air magnesium suspention outlock front fork. 6.display use King-meter LCD or LED display /APT brand LCD display . 7. alloy rear rack with LED light . 8. wellgo alloy pedal . 9. velo leather grip and saddle. 10.promax seat post and handlebar . 11. prowheel alloy crank. 12. front &rear LED light . 13. KMC chain. 14. shimano altus 7 speed or Alivio 9 speed or deore 10speed.