Features:
1. Built-in latest Ver1.4.6 firmware
2. Adopt 3D shell design
3. Built-in card slot, burning interface
4. Support power display function, built-in 800mah rechargeable lithium battery

Parameters:
Firmware version: Ver1.4.6 (Note: The firmware version is not fixed. In the future, the updated firmware will be built-in with the release of new firmware. Currently it is Ver1.4.6)
Body size: 9cm×5.8cm×1.5cm
Screen size: 2.8 inches
Antenna length: about 13.5cm
Applicable scope: 2.4GhzWiFi, Bluetooth, GPS detection, etc.
Battery: 800mAh
Charging time: 1~2 hours

Specifications of external antenna:
GPS antenna is 20dBi active 13.5cm antenna
2.4G antenna is 8dBi 16cm antenna

Package includes:
1 x ESP32 development board
2 x Antenna