12 Hour Playback, Low Latency, Bass Mode, And Low Latency Are All Features Of Product Details ?UPGRADE AN OLDER SPEAKER?1Mii ML201 Bluetooth adapter stereo receiver equipped with the latest Bluetooth 5.1, which allows you to wirelessly stream audio from your Bluetooth enabled devices to your existing wired home or car stereo system, speakers. ?12HRS LONG PLAYTIME?When fully charged, this Bluetooth receiver provides 12 hours of playing time. When plugged into a power outlet, the Bluetooth audio receiver can power on automatically and reconnect with the previously paired device. NOTE: This unit does NOT come with a USB power adapter, you can use other DC 5V power supply. ?BASS MODE?This ML201 Bluetooth receiver "M" key provides two sound effect options: bass mode and regular mode. You can switch to Bass mode at any time to enjoy an enhanced audio experience. ?EASY SETUP, EASY TO USE?Easy plug, pair and play. Plug into 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. After that, you can enjoy the music. This product is a receiver only, NOT a transmitter. ?LONG RANGE WIRELESS CONNECTION?The ML201 bluetooth stereo receiver for home stereo can receive music from up to 50-70ft (20-30m) indoors (without obstacles), so you can control your music more conveniently and enjoy your muics freely. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.