4Smarts B9 Bluetooth Audio Transmitter / Flight Adapter Connect your wireless headphones to devices without Bluetooth! With this Bluetooth audio transmitter from 4Smarts you can easily connect your wireless headphones to devices with one or two 3.5mm jacks, for example on airplanes, TVs, portable game consoles like Nintendo Switch or similar. Perfect to take with you on the go! Advanced Bluetooth 5.1 technology for fast pairing and optimal audio connection for a more stable connection with less interference and dropouts and lower power consumption. 4smarts Bluetooth Audio B9 audio adapter with a fold-out 3.5mm dual plug enables audio transmission from standard analog audio devices to wireless headphones or speakers via Bluetooth. Use the single connector to transfer audio from analog devices like TVs, portable game consoles, fitness equipment, and MP3 players to TWS and wireless headphones and Bluetooth speakers. Unfold the other 3.5mm audio connectors to get an adapter that works to connect for in-flight entertainment. The 4smarts Bluetooth Audio Transmitter B9 features low latency and instant audio transmission, allowing you to enjoy high-quality audio and HD video in sync. The Bluetooth Audio Transmitter has a 200mAh battery that provides up to 10 hours of power and can be fully charged in less than 2 hours via USB-C. Specifications: Brand: 4Smarts Model: B9 Color: Black Material: Metal, ABS Bluetooth version: 5.1 Bluetooth distance: approx. 7M Audio connection: 3.5mm AUX in and out Battery: Li-Ion Polymer Capacity: 200mAh Charging time: ~2.5 hours (100mAh) Operating time: ~10 hours Frequency range: 2.402-2.480 GHz Standby: automatic shutdown after 10 minutes without connection Dimensions: 6.2 x 4.0 x 1.3 cm Compatibility: Universal The package includes: 1x Bluetooth audio transmitter B9 1x USB-A to USB-C charging cable 80cm 1x instruction manual