Mini and compact USB 3.1 high speed interfacem、 can be positive and negative inserted Super good compatibility、 support for different brands of devices Support synchronous data transfering and charging、 Convenient and portable、 easy to carry、 more durable. Dimensions: 0.98 in x 0.43 in x 0.24 in (2.5 cm x 1.1 cm x 0.6 cm) Weight: 0.18 oz (5 g)