8883 parameters: 1. Working voltage: 7.4v 2. Current: 150mA 3. Speed: 560-580 rpm 4. Torque: 1.6kg 5. Running time: more than 72 hours 6. Compatible with independent plug components with building blocks, compatible with building technology 7. Power supply mode: battery box or lithium battery power supply 8. Weight: 33.5g 88003 parameters: 1. Working voltage: 7.4v 2. Current: 160mA 3. Speed: 460-480 revolutions 4. Torque: 2.2kg 5. Running time: more than 72 hours 6. Compatible with independent plug components with building blocks, compatible with building technology 7. Weight: 46.5g 8. Power supply mode: battery box or lithium battery power supply 8882 parameters: 1. Working voltage: 7.4v 2. Current: 160mA 3. Rotation speed: 200-220 rpm 4. Torque: 2.8kg 5. Running time: more than 72 hours 6. Compatible with independent plug components with building blocks, compatible with building technology 7. Weight: 73.9.5g 8. Power supply mode: battery box or lithium battery power supply 8885 parameters: 1. Working voltage: 4.5v 2. Power supply mode: 3 AA batteries (not included in the product) 3. 2.4G four channels, left (right) joystick switch 4. 4 shift switches can remotely control 4 receivers, left and right joysticks 5. Weight: 38.8g 8881 parameters: 1. Working voltage: 9v 2. Power supply mode: 6 AA batteries (not included in the product) 3. Overload protection, three-stage switch control 4. Compatible with independent plug components with building blocks, compatible with building technology 5. Weight: 47.9g 88000 parameters: 1. Working voltage: 9v 2. Power supply mode: 6 AAA batteries (not included in the product) 3. Overload protection, positive and negative power switch control 4. Compatible with independent plug components with building blocks, compatible with building technology 5. Weight: 33.8g