Geka GK15 Card Reader for Smart PhonesAdditional Notes:* Geka GK15 Mag. stripe reader. Plugs into smart phones and reads credit cards with the appropriate App. (NOT SUPPLIED)* Track: JIS 1* Density: 75/210BPI* Output: 25mV +-25%* Unencoded analog signal* Scan Speed:~7.5IPS* DC Resistance: 5.1K ohm* Connection: 3mm (1/8) TRRS Plug (Only Mic. connection used)* Dimensions (LxWxD): 1-3/8x 1x 7/16 MPJA34302 MI