engwe electric bike adult electric mountain bike 250w e-bike 26'' electric bicycle with removable 36v 8ah battery, professional 21 speed gear electric bicycle (orange) engwe <br>speed mode: 0 gear pure electric, 1-5 assist mode<br> <br>top speed (km/h): 28km/h<br> <br>assist speed (km/h): 32km/h<br> <br>pure electric cruising range (km): 20-40km<br> <br>assist maximum cruising range (km): 30-50km<br> <br>applicable terrain: mountain, flat<br> <br>operating temperature: whole vehicle: -20~40 degrees, battery operating temperature: -20~60 degrees<br> <br>maximum climbing degree: 15°<br> <br>waterproof grade: instrument waterproof grade≥ip65<br> <br>frame material: high-strength carbon steel<br> <br>vehicle size (length, width and height cm): 160*65*110cm<br> <br>net weight (kg): 23kg<br> <br>maximum body weight (kg): 120kg<br> <br>best tire pressure kpa: 350, load 85kg<br> <br>rear brake (type): disc<br> <br>front brake (type): disc<br>