Add a professional touch to your recording space with our Recording Studio In Use LED Light Box Room Sign! Featuring bright LED lights and a clear "Recording Studio In Use" message, this sign is perfect for letting others know when recording is in session. Easy to hang and battery or USB-operated, it provides a vibrant glow that enhances the atmosphere of any studio or workspace. Elevate your decor with this practical and stylish light box sign! Sold: Single Approx size: 20cm x 8cm x 4.5cm / 7.9 in x 3.2 in x 1.8 in Material: Plastic and LEDs Requires 3 x AA Batteries (not included) or USB. Suitable for self-standing or wall-hanging. Easy access on-off side switch and USB power source.