Note: This item comes unassembled, soldering of headers is required. Lithium battery is not included.     wireless online     802.11 b/g/n/e/i     802 802.11 n (2.4GHz), speed up to 150Mbps     802 802.11 e: Realize the QoS mechanism of wireless multimedia technology     WMM-PS, UAPSD     MPDU and A-MSDU frame aggregation technology     Block recovery, fragmentation and reorganization     Beacon automatic monitoring/scanning     802 802.11 i security features: pre-authentication and TSN     Support WPA/WPA2/WPA2-Enterprise/WPS encryption     Infrastructure BSS Station Mode / SoftAP Mode     Wi-Fi Direct (P2P), P2P discovery, P2P GO mode and P2P power management     Support IPv6     Bluetooth     Bluetooth v4.2 complete standard, including traditional Bluetooth (BR/EDR)     And Bluetooth Low Energy (BLE)     Support standard Class-1, Class-2, Class-3 without external power amplifier     Enhanced precision power control     Output power up to +10 dBm     NZIF receiver, BLE receiving sensitivity is -128 dBm     Adaptive Frequency Hopping (AFH)     Standard HCI based on SDIO/SPI/UART interface     High-speed UART HCI up to 4 Mbps     Support BT 4.2 controller and host protocol stack     Service Discovery Protocol (SDP)     Generic Access Application (GAP)     Safety Management Protocol (SMP)     Bluetooth Low Energy     ATT / General Agreement on Tariffs and Trade     size: 60x23x8mm     Material:PCB+metal     colour:Black          Package Contents:     1 x esp32 lora development board(Unsoldered)     1 x 868-915mHz Antenna     1 x Pin sticker     2 x Pin headers          Only the above package content, other products are not included.     Note: Light shooting 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.