Brand new (unopened) Xiaomi V3 Pistons. This is for a set of V3 (3rd generation) Pistons which has the CNC machined circular housing in a gunmetal plastic body. Comes with hard plastic case and 3 sets of tips.
Reviews for the version 3 Pistons:
https://pokde.net/review/xiaomi-piston-v3-review-the-successor-of-v2-is-here
https://theheadphonelist.com/headphone_review/xiaomi-piston-3-in-ear-earphones-review/