Brand: Astrum Product Code: A85030‑B Description: Multi‑Device Wireless Audio Transmitter & Receiver, AUX – BT300 Product Overview The Astrum BT300 is a versatile 2‑in‑1 Bluetooth 5.3 transceiver that transforms any wired setup into a wireless experience. Use it in TX mode to stream audio from TVs, PCs, or gaming consoles to Bluetooth headphones, or switch to RX mode to receive music from smartphones onto wired speakers or car stereos. With dual pairing support, you can connect two devices simultaneously, making it perfect for shared listening or multi‑device setups. Its built‑in rechargeable battery delivers up to 13 hours of continuous playtime, while USB‑C fast charging ensures quick top‑ups. The BT300 also supports TF cards up to 64GB, features RGB lighting accents, and includes a hands‑free microphone for calls. Compact and lightweight, it’s designed for convenience at home, on the road, or during travel. Key Features Dual Mode: Transmit & receive wireless audio Simultaneous TX Connections: Connect two Bluetooth headphones at once Multi‑Device Pairing: Easy switching between devices USB‑C Fast Charging: 2h recharge, up to 13h playtime Hands‑Free Mic: Clear calls while driving or working Flexible Inputs: 3.5mm AUX + TF card (up to 64GB) RGB Lighting + Display: Real‑time status updates Compact Design: 33g zinc alloy body, portable anywhere High‑Res Audio Support: MP3 / WMA / WAV / FLAC Technical Specifications Feature Details Bluetooth Version 5.3 (range up to 10m) Decoding MP3 / WMA / WAV / FLAC Input Voltage 5V DC Charging Time ~2 hours (USB‑C) Working Time RX: 11h / TX: 13h Dimensions 45 × 45 × 16 mm Weight 33g Input/Output 3.5mm AUX, TF card (up to 64GB) What’s in the Box 1 × Astrum BT300 Bluetooth Transceiver 1 × User Manual