ESP32-S

PU and Memory: Xtensa® 32-bit LX6 Dual-core processor, up to 600 DMIPS.
448 KByte ROM
520 KByte SRAM
16 KByte SRAM in RTC.
QSPI can connect up to 4* Flash/SRAM, each flash should be less than 16 Mbytes.
Supply Voltage: 2.2V~3.6VWifi:
802.11 b/g/n/e/i
802.11 n (2.4 GHz), up to 150 Mbps
802.11 e: QoS for wireless multimedia technology.
WMM-PS, UAPSD
MPDU and A-MSDU aggregation
Block ACK
Fragmentation and defragmentation
Automatic Beacon monitoring/scanning
802.11 i security features: pre-autication and TSN
Wi-Fi Protected Access (WPA)/WPA2/WPA2-Enterprise/Wi-Fi Protected Setup (WPS)
Infrastructure BSS Station mode/SoftAP mode
Wi-Fi Direct (P2P), P2P Discovery, P2P Group Owner mode and P2P Power Management
UMA compliant and certified
Antenna diversity and ion

Bluetooth:
Compliant with Bluetooth v4.2 BR/EDR and BLE specification
Class-1, class-2 and class-3 transmitter without external power amplifier
Enhanced power control
+10 dBm transmitting power
NZIF receiver with -98 dBm sensitivity
Adaptive Frequency Hopping (AFH)
Standard HCI based on SDIO/SPI/UART ? High speed
UART HCI, up to 4 Mbps
BT 4.2 controller and host stack
Service Discover Protocol (SDP)
General Access Profile (GAP)
Security Manage Protocol (SMP)
Bluetooth Low Energy (BLE)
ATT/GATT
HID
GATT-based profile supported
SPP-Like GATT-based profile
BLE Beacon
A2DP/AVRCP/SPP, HSP/HFP, RFCOMM
CVSD and SBC for audio codec
Bluetooth Piconet and Scatternet