If I could give zero stars I would. I bought my razor over two months ago. My first problem was trying to register the warranty online. They gave a written code to scan and it took me to a website that didn’t even recognize my model number! I called customer service and they claimed they could register me. I received a confirmation email on 2/26/21 that the S6540/90 was successfully registered. When I called a week later since the razor wasn’t charging properly, they had no record of the registration. I went through the process over the phone again and was told they would send me a replacement. I believe I called again 2 weeks later when still not replacement arrived. On 4/7 I finally received an email that they had no stock on the S6540:90 and would an S6810/82 be an acceptable replacement. I called immediately and asked about this razor and agreed that would be acceptable, please ship it out ASAP(I had shoulder surgery on 3/1 and couldn’t shave with a blade as I usually do). I sent an email on 4/17 asking for a status update, no response.I called today 4/21 and spent almost an hour on the phone, mostly on hold. Now I was told , first that she saw the previous documentation and it was being processed. I asked why hadn’t it shipped yet and was placed on hold, after numerous waits and false updates and requesting a supervisor, I was eventually told they couldn’t find the s6810/82 anywhere in their warehouses and could they send me a 6880/81 instead. I said yes, just send me a razor before my beard hits the floor. We’ll see if this one arrives before my warranty expires, I doubt it. Since I have my almost 2 month post op doctors visit tomorrow, I might finally get cleared to use my right hand again, hopefully shave and drive. If I can shave with lather and a blade again before a replacement razor arrives, this POS razor is going back to Costco, where customer service is King. Philips/Norelco wins the worlds worst customer service award! Stay Away!