1/ Reading card Automatically, no need switch button, reducing faults.
2/ Long reading distance, better compatibility of reading card.
4/ 3 types of indications when reading card successfully, sound +vibration + LED.
5/ No need to install driver, standard mini-USB data cable to connect to computer to upload data.
6/ Built-in rechargeable lithium battery , 5V/1A battery charger.
7/ Low battery prompt, data storage full prompt, clock error prompt; no data loss in power failure.