The battery stays in place very well. Doesn't drop out. Completely infected. The charge is about enough for the stated time. I don't think 4k is here.
🩺 Palm-Sized Detachable Clinical Teaching Equipment for Enhanced Education
3 Review
Explore Axis Scientific's Flexible Vertebral Arteries for In-Depth Anatomy Study
Anatomical Palm-Sized Human Skull with Removable Features
💀 Compact Human Skeleton Anatomy Model
📚 Musculoskeletal Anatomy Chart by Palace Learning
🦴 Explore the Intricacies of Human Skeleton with the Movable Skeleton Anatomy Model
Anatomical Chart of Spinal Nerves and Dermatomes
KISSTAKER Removable Heart Visceral Educational Parts