1. Material: soft rubber + electronic components 2. Weight: diameter 6.5 about 10 grams/piece, diameter 7.5 about 15 grams/piece 3. Size: about 6.5/7.5 cm in diameter 4. Power supply: Built-in button battery 5. Applicable people: people aged 3 and above 6. Features: with flash, sound, unique shape, beautiful and practical, safe material, wear-resistant and durable, can also be kneaded for massage, relieve stress, etc.
