The Molten GG7X and Molten BG4500 are both high-quality basketballs, but they have some key differences: 1. Material: The Molten GG7X is made of composite leather, while the Molten BG4500 is made of synthetic leather. 2. Design: The Molten GG7X has a unique pebble pattern that provides a good grip and control, while the Molten BG4500 has a traditional pebble design. 3. Intended Use: The Molten GG7X is designed for indoor use, while the Molten BG4500 is designed for both indoor and outdoor use. FIBA Approval: The Molten BG4500 is the official game ball of FIBA and has been used in all FIBA competitions since 2010, while the Molten GG7X is not officially approved by FIBA. 4. Price: The Molten GG7X is generally less expensive than the Molten BG4500.