The T-Deck Pro is a new mobile system that is somewhat similar but not entirely comparable to the LilyGo T-Deck Plus. As usual, the manufacturer is targeting IoT makers and tinkerers and not necessarily regular consumers with these products.
To be more specific, the T-Deck Pro is an open-source system that basically pairs a development board with a keyboard and touchscreen. The feature set is quite extensive, as the T-Deck Pro is also available with a 4G modem, which makes it easy to connect to cellular networks. The other SKU features a voice function.
Both variants come with a 3.1-inch e-ink display with a resolution of 320 x 240 pixels, which is a panel that should be easier to read even in direct sunlight and can be controlled via touch. The system is equipped with an ESP32 chip with two LX7 processing cores, 8MB of PSRAM and twice as much flash storage. TF cards are supported and the T-Deck Pro can be programmed via Arduino IDE or ESP-IDF, for example.
In addition to GNSS, the LilyGo IoT device has a light sensor and a gyroscope, while commands can be entered with a keyboard. LoRa is supported as well and can be used to transmit small amounts of data over longer distances. Last but not least, the T-Deck Pro is equipped with a 1400mAh battery and is currently listed as out of stock for prices starting around $82. Alternatively, the T-Deck Plus is readily available.