4. Charging
When the red LED Light flashes please charging immediately. It need about 2 hours to
charging. When the red LED light out , it meats the battery is full.
Charging connect.
Please using standard USB charging cable, using the Micro’s port to connect the M91
，
USB
port to connect the USB
charger
（
car charger
、
travel charger
、
computer USB etc
）
Pleas noted
：
*When you don’t use BH-M91
，
Please charging at least once every 2 months.
