I bought this bike for my wife but she found it a bit too tall for her comfort. I took it for a short ride and it has lots of power and handled our gravel road very comfortably. Link to youtube review: https://www.youtube.com/watch?v=HwRSFMp_erg
Here are the specs ...
Electrical
Motor Bafang 750w 80Nm
Top Speed 32km (unlockable to 45km)
Configuration Class 1, 2, 3 (configurable)
Throttle 100% Power on Demand
Pedal Assist Level 3, 5, 7, or 9 levels (default 7)
Pedal Assist Sensor Cadence Sealed 12 Magnets
Primary Battery 48v 15Ah Samsung 21700 50E Cell (720Wh)
Dual Battery* 48v 30Ah Samsung 21700 50E Cell (1440Wh)
Range* Up to 70km / Up to 140km with Dual Battery
Charge Cycle 800
Charge Time 5 Hours

Mechanical
Frame 6061 Aluminum Alloy
Fork Suspension with Lockout
Tire Kenda Knobby with K-Shield Puncture Resistance
Tire Size 20" x 4"
Rim Double Wall
Brake Tektro Hydraulic Disc 180mm
Brake Lever Safety Motor Inhibitors
Shifter Shimano Rapid Fire 7-Speed
Rear Derailleur Shimano Acera
Crank 52T Single Guard
Freewheel Nickel Plated 11-32T 7-Speed
Pedal Wellgo Aluminum Platform
Handlebar Stem Adjustable Stem High Rise
Saddle Long Banana Seat

Weight 70lbs (Including battery)
Load Capacity 300lbs