It is very simple to change the battery in the OOONO PARK. Replace the battery by gripping the OOONO PARK with your hand and pull it off the magnets on the car glass. Place the OOONO PARK in one hand, with the display facing the palm of your hand and the OOONO PARK positioned with “CE” closest to you. With the other hand, insert a fingernail or a small flat screwdriver into the crack just below the “CE” and the waste bin icon to loosen the battery tray. Pull out the battery tray from the OOONO PARK. Replace the battery with a new CR2450 battery and reinsert the tray with the new battery.
🔺 Important: Remember to set the time and date again, after the battery replacement.