When we write this short article, the iLife has 4 floor washing robot models, the Shinebot W400, W400s, W450 and W455. These 4 hard floor cleaning robots can be divided into two groups.
The W400 and W400s are similar to each other whereas the W450 and W455 are similar. There are some big difference between these two groups.

• Difference Between iLife Shinebot W400 and W400s:
  iLife W400s is an upgrade of iLife W400, its software has been upgraded when compared with W400, and it comes with a bottle of hard floor cleanser which the W400 does not include. Otherwise, they are the same.

• Difference Between iLife Shinebot W450 and W455:
  The iLife W455 has a silver top whereas the W450 has a black top. The W450 comes with a bottle of hard floor cleanser while the W455 does not.
  According to customer support, these two machines have similar performance, but the W455 has stronger and more efficient cleaning ability compared to W450.
  Otherwise, these two are almost the same.

Difference Between iLife Shinebot W400/W400s and W450/W455:
The two groups have some big difference. The W450/W455 are upgraded models of the W400/W400s, they are “smarter”.

• What’s New?
  The W450/W455 are equiped with PanoView Camera that improves navigation accuracy and avoid missing areas needs cleaning.
  The W450/W455 support WiFi which allows users to control the robots via smartphone App.
  The W450/W455 have more cleaning settings to customize to fit different cleaning needs. You can control the amount of water released, the brush roller speed, the moving speed of the robots, how many times (up to 3 times) you want the robots to clean or dry the floor, and you can also draw in the app to have the robots to wash a specific area for more quick and efficient cleaning.
• Cleaning Modes
  The W400/W400s have 4 modes: Path, Area, Spot, Edge.
  while the W450/W455 have 3 modes: Path, Area, Spot.
• Battery
  The W400/W400s have a 2500mAh battery pack, the charging time is less than 300 minutes whereas the W450/W455 have a 2900mAh battery pack, it’s charging time is less than 380 minutes. It seems no much difference on the working time.
• Hard Floor Cleanser
  The W400s and W450 come with a bottle of hard floor Cleanser whereas the other two do not include.

Similarities:

• These robots can only be used on hard floors, such as laminate, tile, and hardwood floors; they cannot mop carpet/rugs; and they do not dry vacuum.
• Tidalpower Cleaning System
  The robots will moisten and scrub the floor, suction up dirty water, and then scrape residues.
• Separate Dirty/Clean Water Tank
  All of them have separate clean water tank that holds up to 0.85L and dirty water tank that have capacity of 0.9L.
• Charging Type
  They are not self charging robots, they will not automatically go back to the charging dock to recharge when the battery is low or when the job done. So, you will have to manually take them to the charging dock for recharging.
• Anti Collision & Anti Fall
  Just like most of the cleaning robots on the market, these iLife hard floor mopping robots feature Anti Collision sensors to stop them from crashing into obstacles & Anti Fall sensors to prevent them from falling down steps.
• No Barrier Kits
  All of them do not include nor support magnetic strips or “virtual wall” or similar boundary kits to stop them from entering restricted areas.
• Schedule Cleaning
  They do not allow you to schedule cleaning time.

Read the Shinebot comparison table below to learn more:

Some questions and answers:

• Do the Shinebot pick up pet hair?
  No,they do not vacuum.You should vacuum or sweep the floor before using them.
• Can you use other solution such as bona cleaner?
  The manual says “Do not add any detergents except Shinebot cleanser”.
  Commonly, manufacturers do not allow you to use other brand products, or it will void the warranty.
• Will the robots return to the docking base to recharge?
  No.
• Can you set the robots to run at a specific time?
  No.
• Can you open the dirty water tank to clean it?
  No. There’s only an small opening that allows you to fill it with clean water and flush out.
• Will the robots detect carpet/rugs and not going onto?
  No.

You can also download the manuals on iLife official site to learn more details before buying. Here are the links if you want to save time:

W400 manual:
https://www.iliferobot.com/u_file/photo/20191112/7d2d6a54ef.pdf

W400s user guide:
https://www.iliferobot.com/u_file/photo/20201023/809558d89b.pdf

W450 instructions:
https://www.iliferobot.com/u_file/photo/20210505/71906b2af3.pdf

W455 PDF manual:
https://www.iliferobot.com/u_file/photo/20210807/c5c8c33598.pdf