DO NOT BUY ECOFLOW PRODUCTS. THERE IS NO POSSIBILITY TO REPAIR FOR OUR SWITZERLAND MARKET AS PER ANSWER FROM ECOFLOW AFTER A FAILED FIRMWARD UPGRADE "Although I would like to arrange a repair service for you within my approval area, the relevant process is impossible to carry out because of your current residence (Switzerland). Since our repair center is in Germany, you need to send the device back to Germany. This can result in very enormous postage costs and diverse tariffs during the return process between the two countries. The return between Germany and Switzerland has never succeeded. It is unacceptable and senseless for you as well as for us. I hope that you can understand this explanation of the current situation of your device. " Sherry EcoFlow Customer Service Team EcoFlow EU T:+49 800 0002566 DE +43 80 001 8036 AT (9:00-17:00 CET, Monday-Friday) +44 808 812 6006 UK (8:00-16:00 GMT+1, Monday-Friday)