Thank you for viewing. Immediate purchase is welcome. This is an infrared wireless speaker system that allows you to listen to the TV's sound at hand. You can also control the TV from your hand. It is an audio-technica speaker system AT-SP450TV. There is no box. A simple manual and instruction manual are included. *The purchase date is handwritten on the instruction manual (photo 10). The main unit, infrared port, adapter, power supply, etc. are all included. It works perfectly. - Model: AT-SP450TV - Brand: audio-technica - Accessories: Instruction manual, AC adapter - Type: Speaker system Shipping cost of 750 yen will be covered. Please purchase with the understanding that this is a used item.