Item Type: ID Reader Writer_x000D_ Material: ABS_x000D_ Frequency: 125KHZ_x000D_ Life: >100,000 times_x000D_ Distance: Keychain reading and writing distance 2-6CM_x000D_ Protocol: Support ID_x000D_ Card: Support writing T5577, EM4305, CET520 and all T5577, EM4305 compatible cards_x000D_ Battery: 2 x AAA batteries (Battery Not Included)_x000D_ Weight: Approx. 106g / 3.7oz 1[Simple To Use] Change the appearance of the card, and solve the problem of missing cards, lost cards, and replacement cards. 2[Fast Copying] The handheld ID writer is easy to operate, one read and one write, and fast copying, so you can use it with confidence. 3[Stable Performance] Supports read and write operations for most cards, has comfortable hand feeling, stable performance, to meet your various need. 4[Durable Material] ID reader writer is made of high quality ABS material, which is durable, safe and can be used for a long time. 5[125KHZ Frequency] The frequency is 125KHZ, and it supports writing to T5577, EM4305, CET520 and all T5577, EM4305 compatible cards.1 x ID Reader Writer_x000D_ _x000D_ (Battery Not Included) 5 x Card 1 xManual