Note: The remote-controlled shark is designed for pool use, with a slow speed suitable for children. Please be aware of the following: 1. The remote control is not waterproof. 2. Adult supervision is recommended for children's play. 3. Avoid using in the sea to prevent being swept away by waves. 4. Guardians should ensure the child does not fall into the water. 5. The shark operates in water and will not move on land. Specifications: 1. Playtime: 15-20 minutes 2. Charging time: 30-40 minutes 3. Remote control range: over 20 meters in water 4. Swimming speed: 3-4 KM/H 5. Battery for the shark: 3.7V 400mAh lithium battery (included) 6. Remote control batteries: 1.5V AA x2 (not included) 7. Accessories: USB charging cable included. Product dimensions: 34.5 x 14 x 11 cm Package includes: 1 x Shark 1 x Remote Control 1 x Lithium Battery 1 x Screwdriver 1 x USB Cable 1 x Spare Nut 1 x User Manual Features: 2.4G technology, 4 channels, forward/backward movement, left/right turns, automatic demonstration, and tail swing action. Tips: Please allow slight measurement deviations. The actual item color may vary due to monitor differences. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.