Car Advertising Player 1.19 inch Supermarket E-coupon AD Player--Bluetooth,3G 2.Color: ... convenience store, etc Product Function 1. Send the E-coupons and other info to the customer mobile phone ... appointed site, host unit info, etc. 2. Abundant Promotion E-coupons 3. Playing video, picture, rolling text, etc. on ... 2G, 4G, 8G and 16G SD/MMC 8. Power switch 12V 9. Speakers(dual-way 2W ) 10.Color--Black ...