Thank you for viewing! Challenge Touch 1st Gen x 2 Challenge Pad 2 x 1 Challenge Pad 3 x 1 One of the Challenge Pad 1st Gen units may shut down suddenly due to battery degradation. The Challenge Pad 1st Gen and 2 can be modified without a computer. Modifying the Challenge Pad 3 requires building an ADB environment on a computer. There is also a cracked screen (operation is not a problem). Please check the photos carefully as there are other stains and scratches. I used to play with all of them modified, but I no longer need them, so I will give them away. They have been restored to factory settings. Only the software has been modified, and no hardware disassembly or modification has been performed. Please note that a charger is not included. I did not find any problems with the charging terminals, microSD card slot, microB terminal, earphone jack, or physical buttons. They are old, and future operation is not guaranteed, so please consider them as junk items. Please contact me if you have any questions.