Removable Hidden Battery Aairsk GT900 electric bike boasts a 36V 13Ah removable lithium-ion, which can travel up to 30-40km on pedal assist mode per charge for 5-6 hours. The battery is equipped with the BMS Provide System that provides 14 types of protection, making our battery safer and more cycle life. Easily take the battery home or to the office for charging, while its hidden design maintains the bike's elegant look. Powerful Motor GT900 Electric bicycle Equipped with 250W hub motor reaching a max speed of 25km/h. Provides strong and reliable power for your rides, Easily climb a 20° slope. The ebike only weight 58 lbs. Sturdy triangular high-carbon steel frame, hidden battery, and elegant look design, make it perfect for riders looking for a stylish yet practical electric bicycle that’s easy to handle and great for everyday use.  Card Key unlock and 3 riding modes Unlock your ebike effortlessly with the card key, Just use the card key to touch the LCD display. 3 Riding Mode: PAS Mode, which offers moderate power assistance as you pedal with adjustable levels (5 Speed: ) to suit your needs; Pure Electric Mode, the 21-speed gears allow to choose any desired power increment for smooth riding; Pedal Mode, allowing you to ride like a classic bicycle without electric assistance. Ensure more comfortable ride The adjustable carbon steel front fork with rebound and lock functions, which allows riders to lock or unlock the suspension fork as needed. The dual mechanical disc brakes offer reliable stopping power in any weather condition, bumps will no longer be an issue. 36V bicycle headlights and rear bicycle reflector provide strong protection for your night riding. Easy-to-Read LCD Display Stay informed with an intuitive LCD display that tracks your speed, battery level, distance, and assistance mode. This real-time data ensures you’re always in control of your ride. Specification Brand:Aairsk Model:GT900 Battery Capacity:36V 13Ah Motor Power:250W Torque:45NM Meter Display:LCD Display Max. Speed:25km/h Riding Mode:Pure Electric,Pedal Assistant (PAS),Pedal Max range for pure power:30-40 KM Max range for assisted mode:40-60 KM Frame Material:Stainless Steel Max climbing grade:20° Wheel & Tire:24*1.95 inch Gear:Shimano 21 Speed Braking System:Dual disc brake Suspension:Front and rear suspension Charging Time:5-6h Max load:150kg Net Weight:24kg Gross Weight:40kg EU/UK Countries Can be delivered within 4-7 Days.You don't have to pay delivery fee. All bikes 90% have been installed, one year warranty on the frame, six months warranty on the battery, controller, instrumentation, etc. If you encounter any problems when you receive the product, please contact our professional after-sales customer service first. Italy After Sale Point: Weimiao ji Via Ramiro ortz 6/3 65126 pescara IT 3778179737 Before you go to the repair store ,please contact us first. Email: [email protected] Whatsapp: +86 17841010701