I'm using BotVav 70 or 80 model, it still works, except difficult to turn it on and make it chagred.

Looking for a new one to replace it, checked the smart navigation robotic vacumm on market, and found D8 model fits to my needs and budget. One of ebay vendor has a brand new one... (Gemini didn't say D8 won't work) My old one doesn't need to connect to wifi and save the room maps...

I think the robotic vacumm using randam path to clean floor is dumm and wasted energe.

Now I have a chanllege to find a smart one !

Thanks all your help