[Mini Reciprocating Ser] This USB fast-charging electric sing pen is equipped with 8 of high-quality nylon sing heads 12 types of wear-resistant self-adhesive spaper. The size shape are easy to identify. Various shapes of sing heads spaper of various precisions meet the needs of DIY craft enthusiasts! [Small Ser] The versatile detail ser is ergonomically designed f small projects intricate jobs. The ptable compact appearance provides precise control brisk operation. The reciprocating ser has a three-speed adjustment design, 2800 or 3100 or 3600 times per minute, which can complete the wk quickly smoothly. [Overload Protection] Intelligent overload chip protects mot safety at all times. The tool automatically stops when it is overloaded to prevent mot loss extend service life. [USB Quick Charging] It achieves perfect fast charging in 20 minutes, the smart indicat light provides real-time feedback on battery power. The battery life is about 100 minutes when fully unloaded. [Package Includes] ES-A Ser main body x 1, Sing Heads x 8, Power Cd x 1, Stage Case x 1. Self adhesive sper f flat sing head:180 or 280 or 400 or 600 or 800 or 1000 or 1200 x 97pcs, Self adhesive sper f rounded sing head: 180 or 280 or 400 or 600 or 800 or 1000 or 1200 x 47pcs. Model:ES-A Grinding speed:2800 or 3100 or 3600 times or minute Colour:Red Material:Aluminum alloy Size:7x0.83x0.71in Package Contents: 1set reciprocating ser Only the above package content, other products are not included. Note: Light reflection different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.