because it is a lapsap clock.

then means this clock is sampah.. for a 1.5V battery can use until 1.2V only.. than like around 50% of an alkaline battery capacity. meaning when the clock stop running, u put the battery into say a remote, it is likely still usable.

do u think this cheapo clock which can't even work with 1.2V rechargeable NiMH battery have a voltage regulator circuit to limit the current flow?

for me is remote.. just a IR diode and basic signal circuit. if u have a LED torch light that use 1.5V battery, can use it too.. it will be dimmer, that will be the most basic one.