Note: Our readers have limited applicability cannot match all types of FRID cards.Built-in buzzer LED. The reading distance is 0-6 cm (0-24 inches).Compatible with most 125KHz RFID cards. Suppts EM4100 ID cards, 5200 cards, AWID cards, EM4305 cards, T5577 cards some types of HID cards. 1356MHz IC card UHF, UID card, HID iCIass, HID Pr0xCard II, HID Pr0xKey III are not suppted.Hheld shape design. Comftable in h, operates on 2 AAA batteries, easy to use carry. (batteries not included)Widely used in homes, communities, schools, offices, hotels, elevats, any other place that requires security moniting access control suppt.Colour: BlueMaterial: PlasticPackage Contents:1 RFID ID Writer10 EM4305 Writable CardOnly the above package content, other products are not included.Note: Light different displays may cause the col of the item in the picture a little different from the real thing. The measurement allowed err is 1-3cm.