Avantree Harmony A1 Auracast Multi-Room Wireless Speaker System for Whole-Home Audio & Background Music, Expandable Setup Stores Small Venues, Bluetooth Input, Optical AUX

【For Multi-Room Background Audio】Includes a transmitter and 3 speakers – designed for seamless music across rooms, ideal for homes, stores, restaurants, and small venues with consistent, shared sound. 【Firmware Update Reminder】Unlock new features and continuous improvements through firmware updates – including options like keeping the speaker powered on continuously for uninterrupted use. 【Expandable Auracast Speaker System】Add more Harmony A1 speakers or Auracast-enabled devices anytime – build a flexible multi-room system that grows with your space. 【Up to 100M Wireless Transmission】 Enjoy stable Auracast audio transmission up to 100 meters between the transmitter and speakers (range may vary depending on environment and obstacles). 【Bluetooth, Optical & AUX Input】Stream audio from your phone via Bluetooth (works best when your device is near the transmitter), or connect to TVs and media players using Optical or AUX.