1. Products with smooth overall design and size; after careful research applied to 95% of the car. 2. Product shell material using a whole piece of brass processing, high temperature resistance, fire retardance, good heat dissipation, strong and durable. 3. Two negative contacts of the product and the positive contact, carefully study its elasticity, not easy to fall off when using. 4. 12 - 24 V products have wide input voltage, can realize the intelligent control of output current, fast charging, safe and efficient. 5. Products built in a variety of chips, to provide a stable current and voltage output.