Plug Type:USB Plug. 12 Grinding Wheel Head. Different heads are designed to get different polishing effects. 1 USB Charging Cable. 6 Sand Ring. Size:About 12.5 1.9cm/4.92 0.74in. 6.Built-in 500mah lithium battery,long battery life,eliminating the need for frequent charging and making it more convenient to use.
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