This is a great electric bike - my first I'd admit, but I've been a keen cyclist for decades.
The box came from Poland and although said would take 2 weeks to arrive, suddenly got from Europe to my front door in a day. It's a big, heavy box, so be prepared to have someone help you move it indoors. Even when empty the box weighs quite a bit, so storage/disposal won't be overly easy.
Unpacking is tricky - they used dozens of cable ties to keep packing foam and the like all over the bike and attach bits together. You'll need good scissors or be careful with a Stanley knife to get it all apart without damaging anything.
Assembly is pretty easy - no real instructions but it's straight forward enough. They supply a toolkit for this and other adjustments, so you don't need anything else. Four bolts for the handlebars, attach the front wheel, 2 bolts for the front mudguard and you're set.
Battery comes with 3/4 charge, so you're OK to get going straight away. I've tried other electric bikes before but this really is rather powerful. There are 5 assist settings, 0 being no assist. It's OK on flats and downhill with no assist, and even uphill it's not too bad until it gets steep. Level 1 makes things a bit easier but doesn't give a whoosh uphill, it is very effective on flat ground though and really too much for slow moving, so a low gear and no assist it fine for that. Be prepared for fun at level 2 and above - it really shifts and if you use the gears right, accelerates very fast and reaches top speed incredibly quickly. 15mph when you're not peddling much feels very fast indeed.
You don't need to worry about being in the wrong gear if you've assist on, although I'd think it will lower the range considerably if you do that. With judicial use I've managed to get 35 miles on the 3/4 charge, and I'm a large chap with two knee replacements that uses the assist more than most would need to. 40-50 may well be possible if you use the power carefully.
The controls are easy to use, with light and horn below the power and control buttons. On the right is the throttle - turn it and press the power button to enter "cruise control" where the motor does all the work. Not legal on UK roads, so be warned. It turns off when you brake. There is also a momentary walk assist mode, where as long as you keep your finger on the '-' button it will slowly go along without peddling.
The display is great - clear and easy to use. Shows current, average and max speeds, miles travelled (total and trip), time travelled, etc. The power level (5 bars) is also shown, as is when the front light is on or the brake is depressed (either front or back). There's even a USB-A port underneath to power your phone (500mA max).
Comes with a cheap but usable helmet, cheap but usable pump, bike lock, phone holder and tools, plus battery charger and annoyingly 2 pin plug and adaptor. Once warranty runs out I'll be changing that for a UK plug.
Battery takes around 6 hours to charge and should be done during the day, preferably where if there's an accident it won't burn the house down. I've got a fireproof bag especially for putting around a battery when charging, and will certainly be using it.
Downsides?
Well the battery switch doesn't look overly waterproof and the connectors at the bottom of the battery means on the bike they are in a little well, not weather sealed, so may pose a problem in heavy rain. It's fairly heavy, like a solid mountain bike fully loaded, but that's true of a lot of fat tyre bikes.
The rear light is under the saddle and is controlled manually by a hard to find button. A nice light but easily turned on and off picking it up under the saddle, and obscured if the rack is used. Would have been nice to be controlled like the front light and I'll be modifying it to have a light like this on the rear of the rack where the reflector sits.
The speedo is in KPH, you need to turn assist off then double press the mode button to get into the "P" settings menu (shown). Press + to get to "P3" and mode to get the zero flashing. Use + to change it to a 1, then exit out. You're now showing MPH. I think the other settings are for derestricting the top speed, setting the power level (1-3 instead of 1-5) and setting the wheel size. I found the info at EBikeLing with a dot and com "How to set LCD display parameters" and it half matches the display on this one.
EDIT : Had this for a while now and it's still going strong. With use of the battery only when I really need it I can do a 100 miles before needing to recharge the battery.