Thank you very much for viewing. [Unused] SHOPJAPAN Smart Dumbbell with instruction manual. Lightweight and easy-to-hold smart dumbbell, suitable for a wide range of users from beginners to advanced. - Brand: Shop Japan - Model Name: Smart Dumbbell - Accessories: Instruction manual ※If you have any questions, please inquire via comments. I cannot answer specialized questions, but I will investigate and respond within the scope of my knowledge.