Product Name: Children's Video Intercom Function: Anti-interference Theoretical Communication Distance: Below 1.5km (km) Network Type: Network Not Supported Frequency Range: 1.5km Below (MHz) Battery Type: Lithium Battery Battery Capacity: 650mAh     Features: 1. Children's Video Intercom, Interactive Video Adorable Baby New Social 2. The New Walkie-talkie Opens Color Childhood, Anti-loss Rope Design, And Is Not Afraid Of Losing When Going Out To Play. 3. Gently Convenient Belt Is Not Easy To Fall Off, Happy To Accompany Happy Moments 4. Clear And Soft Sound Quality, Clear Dialogue From A Distance 5. Strong Penetration, High Receiving Sensitivity, Long-distance Communication Signal Coverage 6.150-500 M Long Distance Intercom, Clear Sound Quality 7. Automatic Startup Connection, Only One-to-one Self-connection, Self-contained WiFi Connection Intercom Without Traffic, Making Communication More Convenient 8. Interesting Four Kinds Of Sound Change, Multi-level Volume Free Adjustment, High-definition Sound Quality Is Not Harsh. A Variety Of Voice Changes And More Fun