shenzhen yiwen technology co

Product Introduction
The device has a built-in battery, power-off alarm, alarm, low-battery alarm, etc. Buy it now and get a lifetime platform for free. The platform is free for life, and there is no need to pay extra every year!
This The product is based on the

network and
satellite positioning system
,
which locates or monitors remote targets through short messages or interconnection. It is the most technologically advanced
And
dual positioning
, the waterproof level can be achieved
.
The standard battery is a lithium battery, and it can stand by for about
hours after being fully charged. The battery charging time under normal use is
hours