Basic ParameterSOURCE FROM:https://feasycom.com/product-realtek-Bluetooth-5-Dual-Mode-Module-High-Speed.htmlFSC-BT836B supports SPP, GATT(central/peripheral), HID profiles, it can transfer data in a high speed mode(SPP: 82KB/s, GATT: 75KB/s). FSC-BT836B also supports multiple connections(Supports connect with 1 iOS+7 Android smartphones simultaneously).Bluetooth module modelFSC-BT836BBluetooth versionBluetooth 5.0 dual mode(BR/EDR+BLE)Dimension13mm x 26.9mm x 2.0mmTransmit power+10dBm maximumPower supply3.3 VProfilesSPP, HID, GATT, ATT, GAPFrequency2.402 - 2.480 GHzAntennaBuilt-in PCB Antenna(Default), supports external antenna(Optional)HighlightsHigh speed, Bluetooth 5.0, Multiple connections, OTA function, High compatibility, Supports iap2 protocolFeatures:* Fully qualified Bluetooth 5.0 dual mode.* Postage stamp sized: 13*26.9 *2mm.* Class 1.5 support(high output power).* Profiles support: SPP, HID, GATT, ATT, GAP.* The default UART Baud rate is 115.2Kbps and can support from 1200bps up to 921.6Kbps.* UART, I2C ,USB hardware interfaces.* Supports the OTA upgrade.* Supports Apple MFi(iAP2), iBeacon.* BQB, FCC, CE, KC,TELEC Certified.Applications*Smart Watch and Bluetooth Bracelet*Health & Medical devices*Wireless POS*Measurement and Monitoring Systems*Industrial Sensors and Control*Asset Tracking