HZ603035 3.7V 600mAh Lithium Polymer Battery Pouch Cell For Headphone & Tracker Replacement Product Overview This reliable lithium polymer battery delivers stable power for compact small-size electronics. It fits headphones, GPS trackers and many portable gadgets, with flexible custom options to match your device requirements. Built for long-term daily use for consumer electronic projects. Specifications Item Details Model HZ603035 Cell Type Lithium polymer battery Dimension