Since we have already covered 5.5/5/4.3/3.2 inch video baby montiors to satisfy differment market needs for our customers, based on our customers needs and requirements and Dayun Links future business plan, after market research we develop and launch a new product line -- white noise machine. The first new model is a small portable baby white noise machine with 20 soothing sounds and 1000mAh rechargeabkle battery inside, timer setting, type-C charging port, fine workmanship, etc