Check the listing for details. FM MP3 Radio Transmitter Wireless Microphone Broadcast Launch Board Audio kits. Condition: New. Listed at 4.20 USD. FM MP3 Radio Transmitter Wireless Microphone Broadcast Launch Board Audio kits Description: Working voltage [3-6V] (power supply voltage high launch distance, do not exceed the voltage range) Working current [10-50MA] Launch distance [3-50 m] (by the power supply voltage and environmental impact) Antenna [no] own diy, with 1 meter wire instead Frequency adjustment [continuously adjustable] [default 5V-99.8MHZ near] Volume adjustment[no] MIC microphone sensitivity [0.3 meters of normal speech can be received] Audio signal line[no] Modulation mode[FM (76-110MHZ or less)] (non-stereo) PCB board size [length 63mm, width 41mm, pcb thick 1.6mm] installation and debugging is simple, access to DC power, open the MIC or access MP3, with your radio in the vicinity of 99.8MHZ search can be Scope of application [General multimedia MP3 audio wireless transmitter, wireless microphone] Buyers need to be equipped with [audio signal cable, wire, battery box, battery or power supply, 88-108MHZ FM receiver] Package list: 1PCS FM Radio Transmitter KitsPaymentDelivery detailsTerms of salesReturnContact usPaymentWe accept payment by PayPal only.Payment must be received within 7 days after auctions ended.Delivery detailsItems will be shipped within 1-2 business days when we received payment.Shipping to USA takes about 8-15 days in normal condition,other countries takes about 15-35 days.Please verify your eBay primary shipping address. We are not responsible for any wrong or undeliverable addresses.Terms of salesAll items will be checked before packingYour feedback and 5 star ratings are much appreciated.If you are unhappy with your purchase, please contact us on negative / neutral feedback or low star ratings.ReturnIf you receive an item is damaged or defective, we will refund you or replace it with identical one.All damaged or defective items may be exchanged within 30 days.Contact usWe take full responsibility if you receive wrong item or damaged item or item not as describled. If you're not satisfied for any reason, please feel free to contact us.Just send us an eBay message.BrandUnbrandedTypeRadio Transmitter