Golf laser instructor functional cellphone power bank

Golf laser instructor functional cellphone power bank

 

This power bank has a capacity of 4200 mAh, The efficiency is more than 90%,

It  takes about 3 hours to finish charging your phone.

Features:

 On the top ,there is an OLED SCREEN  to display

A The remain capacity percentage.
B outputting power currency. 
C remain charging time. 
D Inner temperature, to keep the power bank working in a safe range of temperaure.

2 A green laser line at the top of the power bank.Function

A leveling and calibration tool when hunging pictures

when you are walking in the dark, it shows you the way as a torch

when playing golf, laser line helps you for the stroke.