The color of the product we ship is the color in the first picture, and the specification and quantity are shipped according to the quantity and specification described in the title.If you need to change the color or style, you need to contact us within 12 hours after placing the order.Our product description:Handheld Manual Electricity DC Generator Miniature Light Blub Kit Science Experiment Kids DiscoverySpecification:Product material: ABS Product materialNo-Load Output Voltage: 6.3VOutput Current: 0.2AStorage Method: Well-ventilated, dry, indoor temperature preservationLight Bulb Replacement: 6.3V, 0.3A Miniature Light BulbNote: Please don't overexert in order to avoid damage of the geers, 2 rounds per second is recommended.Product Features:- Amazing handheld electricity generatorCreate power without batteriesGreat for classroom physics teaching demonstrations- Simply turn the handle, the electricity generated makes the bulb bright. The faster you turn the handle, the more power you generate.- Made with a clear Plastic casing, students can clearly see the motor, gears and wiring.- This grip style handle generator allows connection to electrical circuits. Screw out the miniature light bulb, can be used with almost any experiment requiring up to 6.3 volts DC. - This science kit is perfect for demonstrating the energy transformed from mechanical to electrical.Package Included:1 x Handheld Electricity Generator KitMore Details:Note: Because the model and display effect of the monitor may be different, there may be slight differences in color, and the size is manually measured, there may be an error of 1-2cm, please understand.