Does the Angel Watch's video calling feature consume a lot of battery?

Video Calls, Battery Use & Device Warmth

Yes — video calls use significantly more battery than voice calls and may cause the Angel Watch™ to feel warm during use. This is normal for devices that use cameras, screens, and data simultaneously.
To help preserve battery life and prevent excessive heat buildup, we recommend:

• Keeping video calls to under 3 minutes at a time
• Allowing short breaks between video calls when possible

This will help maintain optimal performance and battery health.