Feature:1. The product is simple to connect without any driver or tedious APP download2. This adapter possess beautiful appearance, built‑in rechargeable battery can work for a long time3. Delicate and compact shape, portable wireless designed adapter can be carried around4. Compatible with for Android/iOS system mobile phone and Pad, for bluetooth speakers or headphones that support A2DP protocol5. Lightweight 2‑in‑1 audio transmitter and receiver is perfect for family TV/computer applicationSpecification:Item Type: Wireless Audio AdapterModel Number: AC692XFor Bluetooth Version: For bluetooth V5.0Support Agreement: RX: A2DP TX: A2DPWorking Frequency Range: 2.402GHz-2.480GHzPower Level: Class 2 (Class II)Audio Coding: SBCWorking Current: RX22MA TX35MABuilt-In Battery: 200MAHCharging Current: About 200MACharging Time: About 2 hoursEndurance: RX7H, TX5HFor Bluetooth Distance: >Approx. 10m / 32.8ft (open space)Charging Method: Micro USB 5V/0.5AInput/Output Connection: I2S AUX interfaceCompatible: For Android/iOS system mobile phone and Pad, for bluetooth speakers or headphones that support A2DP protocolSize of Audio Cable: Approx. 3.5mm / 0.1inKey Functions: (see user manual for details)Turn On/Off:Turn On: Press and hold the button for 3S to turn on, the indicator lights.Shut Down: Press and hold the button for 3S under power on, LED lights off and shut down.Mode Switching: Can be switched through the mode switch during turn on using.Dimension: Size of bare machine: Approx. 44 x 44 x 12mm / 1.7 x 1.7 x 0.5in.Package List:1 x Wireless Audio Adapter1 x USB Power Cable1 x 3.5mm Audio Cable1 x User Manual