To clear the memory, press and hold the "MEM" button for several seconds (refer to your specific unit's beep signals, as some versions require holding both SET and MEM). Troubleshooting Common Errors
He looked at the two AAA batteries powering the flickering green light. He realized he had been using the CK-102S not to monitor his health, but to keep a countdown. He was waiting for his own numbers to match the stillness she had found. wrist electronic sphygmomanometer ck-102s manual