RadioMaster TX16S MAX Mark II Radio Transmitter MAX editions features carbon fiber-look faceplates, leather grips, & CNC finishing components & buttons. TX16S Mark II Radio Transmitter from RadioMaster. Features optional Hall gimbals V4.0 OR AG01 gimbals, an Multi-Protocol 4-in-1 OR ELRS internal module, & 2.4GHz radio frequency with 16 channels. MKII version includes a newly designed removable battery cover, raised & flat grips for better ergonomics, & improved S1/S2 knobs with center detents. TX16S Mark II now comes with 3.5mm audio headphone jack & build-in dual speakers to provide great audio options. Specifications: Transmission frequency: 2.400GHz-2.480GHz Transmitter module: Internal 4-in-1 multi-protocol module (CC2500 CYRF6936 A7105 NRF2401) OR Internal ELRS (SX1280) Transmitting power: Internal 4-in-1 multi-protocol module : Max 100mw (protocol dependent); Internal ELRS : Max 250mw (transmitting power is adjustable) Antenna gain: 2db (transmit power adjustable) Working current: 400mA Working voltage: 6.6-8.4v DC Remote control distance:> 2km @ 22dbm Radio firmware: EdgeTX Module Firmware: Multiprotocol- Module (4IN1) -OR- ExpressLRS (ELRS) Channels: Up to 16 channels (depending on the receiver) Display: 4.3-inch TFT full-colour touch display with a resolution of 480 272 Module Bay: JR compatible module bay Upgrade method: Supports USB-C online / SD card offline upgrade In the box: 1xTX16S Mark II Radio 1xBattery tray 18650 Cells are NOT included 1xUSB-C Cable 1xPair of flat grips 1xPair of raised grips 1xUser manual & accessories