Bluetooth 4.1 Transmitter / Receiver, 2-in-1 Wireless 3.5mm Adapter (aptX Low Latency, 2 Devices Simultaneously, For TV / Home Sound System)Bluetooth Version: V4.0Chipset:CSR57E6Supportapt-Xon Transmit modeSupport Dual Connection on both Transmit and Receive ModeFrequency Range: up to 33ftSupport Profile: HSP HFP A2DP AVRCPBattery: 3.7V 350mAhWokring Time: up to 6HSize: 45*45MMLOW DELAY: aptX Low Latency for High-fidelity Stereo Sound, lag-free content streaming in transmitter mode. Low Latency supported Bluetooth receiver is required.MAKE IT TWO: Upgraded 2-in-1 Bluetooth V4.1 transmitter can be paired with two Bluetooth receivers (like headphones + speakers) simultaneously. Note: aptX Low Latency does NOT support Dual link mode.ALWAYS ON: Bluetooth 4.1 2-in-1 Adapter continuously streams even while charging. Built-in battery for up to 10 hours use - enjoy your favorite wireless content all the time.BLUETOOTH EVERYWHERe: In Transmitter mode, turn a non-Bluetooth TV, PC, CD player, iPod, MP3 / MP4 into Bluetooth transmitter. Receiver mode: Ideal for home or vehicle music streaming sound system.PURE SOUND: aptX audio codec for a richer and deeper sound experience. Listen to CD-like audio quality at no compromise. Plus, 12 + 6 month extended warranty and 24/7 friendly customer service.