You're looking for instructions on how to use a CH899 Chouchin radio-controlled clock. Here are some general guidelines:
If the clock is unresponsive, remove the battery and wait for at least 1 minute before reinserting it. Some guides recommend inserting the battery backwards for 5 seconds to fully clear the memory before re-installing it correctly. ch899 chouchin radio controlled clock instructions free
/ch899-chouchin-clock-instructions
Unfortunately, I couldn't find a free, downloadable instruction manual for the CH899 Chouchin radio-controlled clock. However, these general guidelines should help you set up and use your clock. You're looking for instructions on how to use
Continue holding the M. SET button for rapid advancement, or press it repeatedly to move the minute hand step-by-step. SET button for rapid advancement, or press it
: Insert a fresh, high-quality AA alkaline battery. Avoid rechargeable batteries as they often lack the necessary voltage. The 12:00 Reset
Ensure the DST (Daylight Saving Time) switch is set to "On" if you want the clock to adjust itself twice a year.