The Esinkin Bluetooth Audio Adapter Is A Wireless Adapter That Can Be Used With Product Features Listen music wireless: Connect with computer speakers, home stereo systems or other speaker systems via the 3.5 mm or RCA cable, then pair with the Bluetooth audio devices such as smartphones or tablet for streaming music. Easy setup and automatic reconnect: Pair your device to the adapter once with a single button press. It can reconnect automatically with the previously paired device. Wireless range: Indoors(without obstacles) connect rang up 30-40 ft (10-12 m). Works with most device: Bluetooth enabled device including smartphones, tablets, computers, laptops upon and any powered PC speakers, home stereo systems and A/V receivers. NOTE: This adapter doesn't have built-in battery, power by AC to DC power adapter or USB cable. This product is a bluetooth receiver ONLY, not a bluetooth transmitter. Only to give Bluetooth capabilities to an existing stereo / powered speaker / PA. Shipping: Shipping is complimentary within the lower 48 US States. We Do Not Ship to PO/APO Boxes, HI or Alaska We Do Not Ship Outside of the Continental US All items ship within 24-72 hours of Payment For large items that require Freight shipping a valid phone number is required to call and schedule your delivery Terms of Sale and Feedback: Feedback is extremely important to us and If you are satisfied with our transaction, please take a moment to leave Positive Feedback. YOUR Satisfaction is our #1 Priority! If there are any issues, PLEASE contact us BEFORE leaving a neutral or negative rating so that we may resolve any concerns. We PROMISE we can make you happy if you give us a fair chance. Returns / Concerns: All items qualify for returns within 14 - 30 days of receipt. Buyer is responsible for return shipping on any item that is not damaged Please be sure this is an item you want before making your purchase. Customer Satisfaction is our TOP priority! All items are IN STOCK at time of listing. Inventory changes constantly and it is impossible to maintain a perfectly accurate count of all items. Please do not penalize us if we have to issue you a refund! Thank You For Your Business!