Features: Stable output power, 4 Power levels up to 2500mW; 40 Channels (including Raceband) Fast frequency lock, no startup interference with other pilots Built-in output power self-check functionality VTX telemetry with Tramp protocol Tips: VTX is set to 25mW by default! Power levels above 25mW require a HAM license or have to be approved by local authorities! Please you're flying legal frequencies and use our prepared Betaflight VTX tables according to your region. Specs: Input voltage: 7V~34V Interface: MMCX Power levels: PIT/25mW/400mW/1000mW/2500mW Channels: 40 (including Raceband) Mounting pattern: 25.5 x 25.5mm/1.6 : 32g (excluding antenna) VTX telemetry: Tramp RC Tramp VTX table values: 25mW/400mW/1000mW/2500mW Due to different batches, the appearance, color and printed words of the product , which will not affect the use. Material: Metal colour: black Package Contents: 1 x Whoop 5.8G 2.5W VTX Only the above package content, other products are not included. Note: Light reflection 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.