The SKYLARK chip should be at the top of the list. At present, the domestic button machine is used, but it does not support WMA at present, the price is similar to STMP3410, and the function is more complete.
The main features of Skylark are low power consumption and clear and pleasant sound quality. Recording to generate MP3 format files, optionally compressed bit rate; Coding direct recording function, and can adjust the compressed bit rate according to needs; Built-in FM radio.