the Red light Invisible Ink Pen and call infrared invisible ink pen， Use this pen to write on the back of the card, and the ink will disappear. When you use contact lenses, you will see the mark on the back of the poker. ..
In order to let the headset or poker scanner have more operation time, we set the headset to replace the battery. When the battery of your headset or other equipment is exhausted, you can go to the toilet or other unmanned places to replace the battery You play longer ..
The mini wireless earphone has a super Bluetooth. This super strong Bluetooth is used as a super transmitter to make the distance farther. Even if it is 10m away from the poker analyzer mobile phone, the earphone can still receive the signal. The other function of Bluetooth is to keep the sound secret. In other words, this headset can only hear the sound of your phone. ..