Highlights
Portable and Compact
Comfortable to handle, precision metal case, 9mm thickness, weights about 40g.
500MB/s Read Speed, 420MB/s Write Speed  
High-speed transmission, built-in SATA3 standard protocol, M.2 brand solid state drive, USB3.1 interface HD transmission, 4K HD video transmission for about 30s.
Specification
General
Brand: STmagic 
Type: Portable Mini SSD
Model: SPT31
Color: Gray 
Specification
Interface: USB3.1
Read Speed: 500MB/s
Write Speed: 420MB/s
Capacity: 128GB
NAND Flash Memory:3D NAND TLC
Weight & Dimensions
Product Weight: 40g
Package Weight: 200g
Product Dimensions: 7.9 x 2.5 x 0.9cm
Package Dimensions: 15.0x 6.0 x 3cm
Package Contents
1 x USB Portable SSD