Baby Singapore - premium baby products
I bought my doppler from this webbie.
Its an ang moh who owns the web site i think.
The doppler, for it to be effective, its best to be used after 12 weeks... and the baby is very small so a hell lot of patience is needed for detecting the heartbeat
My experience was like one day have, the other day cannot find... so very fedup also sometimes, but it gets easier as baby grows