GOgroove Bluetooth Receiver Portable 3.5mm AUX Wireless Audio Car & Home Kit - BlueGATE RCV Kit 15 Hour Music Streaming to Stereo Speaker Sound Systems from Phones, Tablets (AUX & RCA Kit) WHAT IT DOES: The BlueGATE RCV connects to sound devices using a 3.5mm AUX connection for wireless playback of high fidelity Bluetooth media streaming from smartphones, tablets, and more SOLVES PROBLEM of wanting to stream music from your smartphone to cars/headphones/speakers that don't have Bluetooth; just connect to AUX & our integrated amplifier chip provides line-in quality audio 2ND GENERATION UPGRADES include a larger 40ft wireless signal range, convenient auto-pair to last device, even more durable construction, MicroUSB charging, and a new flat tangle-free cable IN THE BOX you'll find the BlueGATE RCV, 3.5mm audio coupler, RCA to 3.5mm adapter, 3.5mm extension cable, MicroUSB power cable, and an adhesive mounting solution for semi-permanent installations TECH SPECS: v2.1+EDR | A2DP | Operating distance: 40 feet | Charging time: 3 hours | Audio playback: 15 hours | Power: USB 5V DC | Output: 3.5mm | Dimensions: 1.6 x 1.3 x 0.75 inches BlueGATE RCV Bluetooth receiver MicroUSB charging cable RCA adapter (red &amp; white composite connectors) 3.5mm extension cable (male-to-female) 3.5mm audio coupler (female-to-female) 2 x hook-n-loop squares for optional mounting Car audio systems (with an AUX port) Headphones (3.5mm audio coupler included) Older and non-Bluetooth portable speakers