Foldable and contracted to accommodate a variety of riding postures,height adjustable seat will fit all heights. Features: 27.5" eBike LED headlight Aluminum alloy frame Front and rear disc brake 21 speeds Easily removable Li-ion battery Easy height adjustments Easy assemblyThe service cycle is determined by the using frequency and the user's weight. Specification: Brake Distance of 3m-5m depends on speed. Power: 500W/48V high speed motor Battery: 48V/10Ah Lithium-ion Tyres: 27.5" x 2.1" Brake Type: front and rear disc brake Shifting: 21-speed Bicycle Weight: 24kg Weight Capacity: 150kg Max Range: 40km Charging Time: 4 hours Package:137*23*73cm Packing weight:28kg Package: 1 x Bike 1 x Charger 1 x Assembly instruction