Without Power Adapter USB Magnetic and Mini Card Reader with +5V DC Power Supply, Easy to carry

Mobile Chip Card Reader for iPhone/Google's Android, Encryption and Compatible

USB Magnetic Stripe Card Reader/Writer, ISO 7811, AAMVA

Hico Magnetic Card Reader/Writer with Beyond MSR206 605 606

Headphone Mobile Card Reader, Suitable for iPhone/Google's Android

Hico/Loco Magnetic Swipe Card Reader with Encryption, USB Power and PVC Card Reader

FCC-/CE-/RoHS-marked Magnetic Card Reader/Writer

Magnetic Swipe Card Reader/Writer with USB Interface, Supports Mac OS/Windows/Linux

Mobile Card Reader, Suitable for iPhone/Google's Android

eMag iOS/Google's Android SDK Mobile Card Reader with 3.5mm Audio Jack, Various Sizes Available

Mobile Card Reader, Various Sizes Available, 32-bit ARM Cortex CPU

3.5mm Audio Jack Mini Portable Magnetic Mobile Card Reader, Apple and Android iOS (White), 2/3-track

USB Small/Mini Magnetic Card Reader, Fully Supports USB2.0, Measures 90 x 27 x 29mm/3 Tracks

Headphone Jack Credit/Mobile Smart Card Reader for iPhone, iPad with Low-battery Cons

EMV Chip Card Reader with iOS Android SDK and 3 Tracks Magnetic Head

USB Small/Mini Magnetic Card Reader, Fully Supports USB2.0, Measures 90 x 27 x 29mm Reader Driver

MSR605 Magnetic Stripe Card Reader Writer with ISO Formats

MSR605 Magnetic Card Reader Writer, Encryption and Compatible

Magnetic Single Strip Card Reader Writer

MSR606 USB Magnetic Stripe Card Reader Writer, 24DC Compatible Encryption and Programmable Reader