Featuring the following key differences: Increased battery capacity, a battery protection bracket, added vibration and buzzer functionality, optimized button responsiveness, a thicker profile, a finger grip for handling, and a 1/4-inch nut for mounting. Current version does not include BME280. Flashed with LILIGO firmware, includes external LoRa antenna.

Specification:Brand Name: LILYGOModel: T-Echo NRF52840Frequency coverage: 433MHz, 868MHz, 915MHz, 920MHz.Type: BluetoothCategory: Wireless ModuleMaster Chip: NRF52840Wireless Chip: LoRa SX1262Display Screen: 1.54 E-PaperSensor Type: BME280 TEMP Pressure SensorDevice size: 89mm (L) x 53mm (W) x 45mm (H).Antenna length: 174mmFeatures:1. Efficient multi-system GNSS module for precise positioning across GPS, GLONASS, BeiDou, and QZSS systems.2. Long-range SX1262 LoRa transceiver for enhanced communication across 433 to 920 MHz.3. High-performance Bluetooth 5 and support for seamless device integration.4. 1.54-inch E-Paper Display with clear visibility and low refresh time.5. Compact design measuring 89mm x 53 mm x 45mm for easy portability.6. USB power and charge indicators with adaptable interface button modes.Package Includes:1 x LILYGO T-Echo Device1 x Antenna