Ultra-low power consumption full HD battery camera, standby current 250uA. Built-in high-fidelity speaker and HD microphone, support two-way voice intercom, with echo cancellation function. wire-free, solar powered, built-in lithium battery power supply. Easy to use without network environment, built-in 4G module, keep the device online at all times. Suitable for yards, fish ponds, orchards, farms, mines, construction sites and other environments where it is inconvenient to connect to electricity and wiring., Manufacturer: WAFOHSR