Built-in BK7258QN88N chip, ARMv8- (M33F) MCU, 8 MB Flash, 16 MB PSRAM, 640 KB Share , 64 KB ROM Operating Voltage: 2.0V-3.6V IEEE 802.11b/g/ax 20 MHz and 40 MHz channel bandwidth Supports Downlink Multi-User Multiple Input Multiple Output (DL -MIMO) Supports Orthogonal Frequency Division Multiple Access (OFDMA) Supports Target Wake Time () Integrated Bluetooth/Wi-Fi Coexistence (PTA) Transmit Power Up to +20 dBm Receive Sensitivity -99 dBm Supports Bluetooth LE 5.4 Standard Supports Bluetooth Low Energy 1 Mbps and 2 Mbps, Long Range Mode (125 Kbps and 500 Kbps) Transmit Power Up to +15 dBm Receive Sensitivity -97 dBm Color:Black Material:PCB Package Contents: 1 * 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.