Feature: 1. Made of good quality alloy material, coated with anti-corrosion paint, very durable 2. The surface is smooth and greatly improves the service life, can be used for a long time 3. Adopt one ‑ piece molding without burr, possess smooth surface and simple installation 4. The product possess light weight, one-handed operation reduces operator fatigue 5. DAC headphone amplifier have stable structure, excellent performance and long service life Specification: Item Type: Decode Material: Aluminum alloy Model: AK4493 Bluetooth Chip: DSD512 Bluetooth Version: 5.0 Remote Control Board Battery Model: CR2032(not included) How to Use: 1. Accurately connect the interface according to the product identification 2. Turn on the switch to use 3. Turn off the machine after use, and then unplug the connector. Package List: 1 x Remote Control Board1 x Connection Line1 x Decoder1 x Antenna1 x Adapter