RadioMaster TX16S MAX Mark II Radio TransmitterMAX editions features carbon fiber-look faceplates, leather grips, and CNC finishing components and buttons.Latest 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, and 2.4GHz radio frequency with 16 channels. MKII version includes a newly designed removable battery cover, raised and flat grips for better ergonomics, and improved S1/S2 knobs with center detents. TX16S Mark II now comes with 3.5mm audio headphone jack and build-in dual speakers to provide great audio options. Specifications:Transmission frequency: 2.400GHz-2.480GHzTransmitter 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: 400mAWorking voltage: 6.6-8.4v DCRemote control distance:> 2km @ 22dbmRadio firmware: EdgeTXModule 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 * 272Module Bay: JR compatible module bayUpgrade method: Supports USB-C online / SD card offline upgradeIn the box:1 x TX16S Mark II Radio1 x Battery tray *18650 Cells are NOT included1 x USB-C Cable1 x Pair of flat grips1 x Pair of raised grips1 x User manual and accessories