VB601 2.0 inch LCD Screen Hassle-Free Portable Baby Monitor, Support Two Way Talk Back, Night Vision Features 1. Hassle-free portable monitoring. 2. Two way(talk back). 3. Temperature monitoring. 4. Built-in 8 lullabies in the camera. 5. Automatic night vision. 6. Secure, interference free, long range digital signal. 7. High contrast 2.0 inch 220 x 176 color LCD monitor. 8. Long battery life (8 hours in Vox mode). 9. Transmission Frequency: ISM 2400~2483.5 MHz. 10. Transmission Power: 17dBm. 11. Unobstructed Effective Range: 160ft50m indoor850ft260m outdoor, line of sight. 12. Spread Spectrum: AFH & TDMA. 13. Modulation Mode: GFSK. 14. Monitor receiving sensitivity: -90dBm. 15. Monitor consumption current (Max.): 150mA. 16. Camera consumption current (Max.): 100mA. 17. Camera CMOS image sensor, 320 x 240 picture pixel, 5m night vision distance, 31 degree view angle. Functions 1. Remote control: Built-in lullabies, may help the parent comfort the baby fall into a sleep. 2. Temperature monitoring: Know your baby room temperature all the day long without worries. 3. Talk with baby: Two way audio between the camera and monitor, you can talk back to baby. 4. Night vision: Keep an eye on baby all night long with automatic night vision. 5. Up to 8 hours of battery life (in Vox mode): No need to charge the battery for the monitor In the whole night in Vox mode.