ITEM NAME:Wireless Car Steering Wheel Button Hands-free Remote Control For Stereo DVD MP3 Product Description Description: Features: Humanized design of the steering wheel structure, greatly improve the user's ease of operation and security; Installation is simple, suitable for the use of various types of vehicles; Suitable for controlling CD/VCD/DVD or other automotive electronic products with remote control; Built in high compatibility chip, you can copy more than 95% of the current infrared remote control; Up to 100 thousand times more than the rewritable EEPROM technology, can copy all kinds of remote control functions; Built in high capacity memory, up to 10 copies of the keys, enough to meet the car's remote control functions; The replication function is easy to learn and the replication accuracy rate is very high; After successful replication, as long as no artificial erasure, can be permanently saved; 3V torque battery power supply, very low power consumption; Specifications: Product name: Car Steering Wheel Hands-free MP3 Wireless Remote Control Power voltage: 3V Material: ABS Net weight: about 37g Gross weight: about 47g Product size: 70 X 40 X 20mm/2.76 X 1.57 X 0.79" (L X W X H) Packing size: 87 X 60 X 60mm/3.43 X 2.36 X 2.36" (L X W X H) Inclus: 1 X Car Steering Wheel Remote Control 1 XÂ User Manual.Humanized design of the steering wheel structure, greatly improve the user's ease of operation and security;. Net weight: about 37g. The replication function is easy to learn and the replication accuracy rate is very high;.