Public network intercom Wifi intercom, bluetooth earphones Free networking, large volume, High fidelity output Software upgrade in the air, supporting multi, platform installation Quick search for members and friends, PTT voice priority application/preemption, PTT voice prompt sound Frequency Range:400-470MHz Chip: 8909[quad core 1.3GHz 64 bit processor] Sim card:SMS function Physical:Support Side key:Support One click:Support system:Android 8.1 working voltage:13.8 V Receiving:-106dbm Maximum:23dBm-25dBm@All up bits Working:-20-+75 degrees Storage:-40-+85 degrees 4G:FDD LTE, TDD LTE 3G:WCDMA:TDSCDMA, CDMA2000 2G:GSM,CDMA Flash:4GB+512MB (The product printed words depending on the batch, but this does not affect use) Color:As Shown Material:ABS Package Contents: 1 * Car Radio 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.