Built-in ESP32-C3FH4 or ESP32-C3FN4 chip with RISC-V32-bit single-core microprocessor, main frequency up to 160MHz 4MB embedded flash and 384KB ROM with 400KBSRAM (16KB dedicated to cache) Wi-Fi supports IEEE802.11b/G protocol with data rates up to 150Mbps Low power Bluetooth 5 and Bluetooth mesh supporting multiple data rates Built-in ESP32-C3FH4 or ESP32-C3FN4 chip, RISC-V32-bit single-core microprocessor, main frequency up to 160MHz 4MB embedded flash 384KB ROM 400KBSRAM (16KB dedicated to cache) Wi-fi Supports IEEE802.11b/ G protocol operating channel center frequency range: 2412~2484MHz supports 20MHz and 40MHz bandwidth in the 2.4GHz band Supports 1T1R mode with data rates up to 150Mbps Wireless Multimedia (WMM) Frame aggregation (TX/RXA-MPDU,TX/RXA-MSDU) ImmediateBlockACK Fragmentation and restructuring (Fragmentationanddefragmentation) transmission opportunity (Transmissionopportunity TXOP) Beacon automatic monitoring (hardware TSF) Supporting infrastructure networks in Station mode, SoftAP mode, Station+SoftAP mode, and hybrid mode note that SoftAP channels change simultaneously when esp32-C3 series is scanned in Station mode Low power Bluetooth: Bluetooth5, Bluetoothmesh supports 125Kbps, 500Kbps, 1Mbps, and 2Mbps (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: PCB Package Contents: 1*ESP32-C3 Development Board Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.