1Standard copper wire 10 wrap coil and 47uf capacitance value, the machine operates stably. 2Normal start 5V, working voltage 610V, stable bounce, strong rear seat magnetism. 3Made of highquality alloy material, safe and ecofriendly, firm and durable for use. 4Unique shape, highlight the difference, beautiful and practical, suitable for beginners and professional tattooists. 5Good liner and shader effect, easy to use, high rotating speed, no hot after working for a long time.