First of all..I am an 80 Kg female who has just started the third decade of life. I am suffering from knee ligament injury in both legs, one of which has been repaired with a muscle flap in mid 2018. I have recovered well..and am still building my muscle strength in both legs..and wanted a bicycle that will not put undue pressure on my knees. And so, we come to the 'elife natural'.. Did I mention that I have always planned for an environment-friendly vehicle? So..let us have a look at my elife natural. Colour: I bought the grey one...and it looks sooo cool.. Everyone in my hospital loves it.. I will say that it is a combination of sombre, and dashing ;) Assembling the cycle: Ahh..actually, they give you all the tools needed (actually, you just need 2) and a manual with detailed instructions, and even I (who has not assembled anything tougher than toddler's jigsaw puzzles) could do it within 20 minutes (actually, I took time figuring out things..as I usually do try not to get involved with all things mechanical). The adjustments of the seats and handle are so easy!! (No need for screw drivers). It is easy to take out the battery after tilting the seat (there is another easy mechanism down there..) and lo!! I put the battery on charging mode.. The Riding: I am lazy, and lives just 2.5 Km from my workplace.. The road is mostly flat, but it does have a couple of rather steep climbs (around 60-70 degrees). I work in a tertiary level health care institution and the entrance and parts of the campus can get a bit (or a lot) crowded/jammed with vehicles at times. I was apprehensive the first day..as it had been a long time since I last rode a bicycle. So, to get over my lack of confidence and brush up my riding skills, I did take a few days of practice riding in and around my apartment courtyard. I suggest the same to all.. My height is around 160 cms and let me tell you, the wheel height with the lowest seat level is THE PERFECT riding position for me. It is very easy to control movements and maintain balance..and at times, i just row with my feet in the heavy traffic or just climb down and walk with my bicycle along with the pedestrians..leaving the jammed traffic far behind ;). For those who are taller, you can easily adjust the seat height and you're good to go! As for the gears, let me tell you, I have never once ridden an geared bicycle. So, it got me a little while getting comfortable with it. But, I have learnt to manage it now (although, that was not much necessary in our terrain). There are 3 pedal assist modes- low, medium and high. I usually go with the low mode...and occasionally slip to the moderate for the climbs (60-70 degree). For moderate climbs (till 45 degrees), it goes smoothly with the low mode. I use the high assist mode only when I want to increase my speed (I had to reach somewhere really fast..). For those with problematic knees, I suggest a higher gear for climbs, so that your knees will not be bothered much. For those who prefer a little more exercise, ride without the motor assistance or use the low assist mode (but mind your knees..and your back in rough/steep terrain). It is easy to switch assistance levels and gears with a single thumb while riding. As for the mileage, I have now ridden 37 kilometres (around 25 Km in low-moderate assistance levels, and 12 K in high assistance) till the batter level indicator came down to a single red light..and have now put the battery on charging without waiting to see how far it can go. So, I think, it can go around 15 to 20 more Kms with my weight- making a total of around 55 Kms per charge. Should be higher with low assist modes. The tyres are good quality. The bicycle itself is quite sturdy. My colleagues do take trial rides on it and some of them weigh more than 90 Kgs. Handle grip is excellent. Things every bicycle owner need to do: Love your bike. Take care of it. Get a pump (preferably one with a pressure gauge, so that you can make sure that you have the required tyre pressure). The indicated range is 40 to 90 PSI in my tyres. I go with a 60, as I weigh a bit on the heavier side. Maintain the tyre pressure..by checking it regularly. I ride only around 5 Km per day. So, I do it every 3-4 days. Also, clean your bicycle ;). And maintain contro of your bike at all times, as it is easy to get drifted away in your thoughts due to the easy riding (may not be applicable to all..but I did that a couple of times and drifted to the central lane, and was jarred back to the reality by the horns!!) I suggest you get a high pitch horn(avaiable in all online platforms) as the bell is not that much suited for city traffic and noise. I also got a headlight fitted (both are battery operated), as the cycle has only has a reflector. They will give you a superb looking cycling helmet and a lock. It is a number lock. I have ordered a lock with alarm and gps tracking..just in case. Afterall, my elife is costlier and better than the average bicycle!! Last, but not the least, the CMB team: They were so responsive to my rather confused queries, and helpful in every stage of searching for the right bicycle for me, the order placement, delivery, and post delivery assistance. Kudos for that. PS: I have not had any issues with battery, or needed repairs and other maintenance related things.So, cannot comment on that. Will update in future. So far, soooo good. :) Happy cycling!!