📕 Closed Book

🎞️ Film Frames

📖 Open Book

🎶 Musical Notes

📟 Pager

🎙️ Studio Microphone

📠 Fax Machine

🎚️ Level Slider

🔋 Battery

💍 Ring

🎛️ Control Knobs

🔌 Electric Plug

💎 Gem Stone

🎤 Microphone

💻 Laptop

🔇 Muted Speaker

🎧 Headphone

🔈 Speaker Low Volume

📻 Radio

🔉 Speaker Medium Volume