1. Using high quality materials, quality is guaranteed 2. Exquisite and compact appearance, beautiful arrangement of components 3. Purchase 2 modules, you can realize the intercom function 4. Compact size is simple and convenient to use 5. Wide range of applications, suitable for a variety of DIY occasions Communication distance: 300 meters (open ground) Operating voltage: DC3.3-6V Transmitting current: 25mA Receiving current: 25mA(0 gear)/150mA(8 gears) Channel-Operating frequency: CH1-467.6625MHz CH2-462.6625MHz CH3-446.05625MHz CH4-409.8000MHz CH5-168.2625MHz CH6-40.650MHz CH7-27.125MHz Warm tips: 1. This product contains circuit board and antenna, does not contain the speaker 2.The antenna needs to be welded by yourself 3.Speaker specification 80.5W Due to different product batches, the appearance , which does not affect the use Colour:Black Material:plastic Package Contents: 1 x Walkie-talkie module 1 x Antenna 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.