Office, Live Broadcast Movable Room, Singing Practice, Piano, Soundproof Room, Silent Phone Cabin, Studying and Conference Cabin (For 4 Persons) Four Persons Room Product Video 1: https://youtube.com/shorts/62dD5fNAM8A?si=g8qeA3o_gB1we-h6 Product Video 2: https://youtube.com/shorts/sPS2GgMbntc?si=f1h1xcuWDxMd2Oqr Power Supply 220V/50HZ (Can change to 110V) Mute Ventilation System LED Light Double Switch Five-prong Hole Plug USB Internet Line Connections Thickened Sheet Metal, Tempered Glass, Environmentally Friendly Sound Absorbing Board, High Density Polyeste Sound-Absorbing Cotton Weight: 480 KG Size: 180 x 150 x 230 cm Quality and Safety Approved by the China Government. The listed price does not include any countries' import tariffs (if any). Delivered by Sea. Please allow about 2 months to reach your address. Installation Video will be provided. Sofas Included.