Black USB bi-directional, 3-track standalone MSR. Magtek chip set and diode plus audible "read" response. Great for POS but also reading IDs, banking, library and medical applications. Built to last for years. Interface:cxzxzz USB Encode Mode: F2F Standard: ISO7810, ISO7811-1/2/3/4/5 Certification: FCC, CE Compatible Operation systems: Windows 2000 / XP / Vista / 7 / 8 / 10 Data Format: according with the requirement of user Card Swipe Speed: 10-140cm/s Life circle of the Head: 500000 times Coercive Force: 300-4000oe The Density of Magnetic Stripe: Track 1--210BPI with max 75 characters Track 2--210BPI with max 75 characters or 75BPI with 37 characters Environment : Working Temperature: 0--40oC Working Humidity: 10%-- 90% Working Voltage: DC+5V +/-5%Working Current: 50mA Storage Temperature: -20 --50 oC Item Dimension (L inchxW inchxH inch) 6 x 4 x 2