Place one fresh 1.5V AA alkaline battery into the compartment, following the +/- polarity markings. Do not use rechargeable batteries .
The CH-899 usually features a dual alarm system (AL1 and AL2). ch-899 chouchin radio controlled clock manual
If it finds the signal, the hands will automatically move to the correct local time. If it fails initially, it may take until nightfall (when signals are stronger) to synchronize. 2. Manual Time Setting Place one fresh 1