ANCHEER Power Plus Folding Electric Mountain Bike with Lithium-Ion Battery PREMIUM QUALITY: The e-bike adopts 100 percent aluminum alloy frame, the front fork is made of high-strength carbon steel and packed with premium comfort shock absorption; Meter has 3-speed smart meter button and 18.7 Inch High quality lithium tire LARGE CAPACITY LITHIUM BATTERY: 36V 8AH Lithium Battery supports 25-50km. Equipped with smart lithium battery charger for fast charging (4-6 hrs). BRAKE & GEAR SHIFT SYSTEM: Front Aluminum Alloy V Brake, Back Electric vehicle brake; 7-speed Shimano professional transmission system Fitted with a 250w motor the foldable bike will easily assist you to travel at the 15mph road speed limit. Safe to ride in the rain EASY FOLDING: Ideal for travelling holidays and those with minimal storage space; FREE ASSEMBLY SERVICE AVAILABLE--when purchasing this e bike, click on the Select Assembly Preference button above, choose "Ship to store for assembly and pickup" or "At-home assembly by mobile professional"; Assembly instruction video for AN-EB002 please see: https://drive.google.com/open?id=0B8ArYrneLylHcU5qa1haQnB0Z3M