Features: This duplex hotspot board supports UHF, VHF, and supports 400M, 100M, and 800M. With premium temperature complementary crystals, stable operation performance and no bias frequency. Wide ranges of applications, supporting B+, 2B, 3B, 3B+, 4B, etc. Circuit tantalum capacitor filtering, stable operation, can be 7 * 24 hours opened. The using effect of is very nice, (C4FM, P25 have been tested). Support OLED screens and serial screens. Compatible with for and ready for use. Specifications: Name: Duplex Hotspot Board Material: plastic colour: As shown Package Contents: 1 x Duplex Hotspot Board 1 x Display 2 x SMA interface 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.