Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•Support Bluetooth version: Support Bluetooth 4.1 or below
•Power supply voltage: DC 3.7-5V
•The installation of electronic modules requires basic knowledge and requires a certain electronic professional foundation and hands-on ability. Please purchase carefully!
•Package Included:2Pcs VHM-314 Bluetooth Audio Receiver Board 5.0 MP3 lossless HF board DIY(If there are any problems with the product, please send us pictures.Tell us more details about this problem.)
•Thank you so much for your purchasing from our store.Any question ,please feel free to contact us.