Avantree Audikast 4 | Bluetooth 5.4 Compatible | Bluetooth Transmitter for TV | Low Latency, Optical Digital Compatible Instant purchase OK! [Description] This device makes Bluetooth-incompatible TVs Bluetooth-compatible. It's a transmitter that wirelessly sends TV audio via Bluetooth, and it supports the latest Bluetooth 5.4. It supports low-latency codecs, minimizing audio-visual lag for comfortable viewing. • Bluetooth 5.4 compatible • Bluetooth transmitter for TV • Optical Digital / 3.5mm AUX input compatible • aptX Adaptive, aptX HD compatible [Condition] Purchased on Amazon recently (late December) for 8,999 yen. Selling because it didn't suit my needs. Operation confirmed and works without issue. It's in excellent condition, as I only opened the box to check the operation. All accessories are included. [Shipping] Will be carefully packaged and shipped via Mercari convenient shipping for peace of mind!