What is the purchase skill of massage belt？

1, look at the fabric: the fabric of the cheap massage belt is mostly recycled PU, containing a lot of harmful substances, long-term use is harmful to health.
2, look at the appearance: good quality color is brighter, button panel design is reasonable, inferior product color difference shape is small, color is not bright.
3, look at the motor: high-quality massage belt a double motor, can vibrate in two directions at the same time, fat power is stronger, the effect is more obvious. One strand of product, only one
Motor, the effect is weak.
4, see the function: high-quality massage belt with automatic mode, semi-automatic mode, manual mode, etc., according to their own needs selected.