3.7v 850mah lipo battery cell/3.7v 450mah lipo battery/48v lipo battery with CAVITATION AND RF 3 IN 1

1 years warranty time for free, ex factory under normal and proper operation;
free labor and material but without consumables parts.

There is a professional international after-sale service team, who can provide you
24 hours after-sale service and technical supports . Our machines are designed by
Modularization. Any problem, we will make sure where is the problem by your
description, photos or videos, and give you the solutions immediately . If there is
any problem can not be resolved easily, we will send you the new module for
changing for free in two year, just the person knows some electrics knowledge can
work this . We will made warranty contract with you and take the two years
warranty promise seriously .

There is a copy user’s manuals for detailed instructions on the introduction, the
operation, the maintenance, etc.