4000MAH UNIVERSAL POWER BANK WITH CABLE IN - Durable & Reliable | CELL DEMAND Official

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- High efficiency output capacity of 4000mAh - Easy and portable to carry without a heavy bag to consider - Great external battery for electricity-saving function - While charging it will not interfere with phone calls or data streaming - Intelligent protection against over-charging, over-loading, short-circuit - Back-up power fast for your everyday mobile devices Show more