8 bands cover 80m/60m/40m/30m/20m/17m/15m/10m,Without battery version. Whether using internal battery or external 13.8v power supply, it can reach 3-5W power in 8 bands, and reserve the SOT-223 and TO-220 package pads required for upgrading. High emission efficiency, 80m/60m/40m/30m/20m efficiency is higher than 80%, 17m efficiency is higher than 70%, 15m/10m efficiency is higher than 60%. frequency accuracy is 1PPM, frequency stability is 0.5PPM. BNC antenna interface. Type: HF QRP SDR Transceiver Mode: SSB/CW output: 10W max at 13.8V exit DC in Frequency range: 3.5-30MHz Built-in MIC Antenna/connector: 50ohms/SO-239 (The product printed words depending on the batch, but this does not affect use) Color: As Shown Material: ABS Package Contents: 1 x HF QRP SDR Transceiver 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.