Features: 1. Powerful Sound Projection: Small In Size But Huge In Size, This Portable Sound Amplifier Can Clearly Amplify Your Voice For Up To 25 To 100 People. Protect Your Vocal Cords So Your Voice Can Be Heard In Any Environment. 2. Extended Battery Life: Our Portable Voice Amplifier Is Equipped With A 2200mah High-Capacity Rechargeable Battery With Long Battery Life. Enjoy Up To 12 Hours Of Amplified Sound With Every Full Charge. Never Worry About The Battery Suddenly Running Out, Easily Recharge Via Usb Cable. 3. Comfortable To Wear: Enjoy The Freedom Of Speaking With The Adjustable Volume Of A Portable Voice Amplifier. Choose To Clip It, Strap It, Or Tie It And With The Addition Of An Adjustable Comfort Strap, You Can Wear It The Way You Want. Great For Teachers And Public Speakers. 4. Multi-Function Speaker: Supports Tf Card, U Disk Playback Mode, Supports Single Repeat Playback, Switch Playback, Loop Playback And Other Functions, Allowing You To Enjoy Crisp Music. Multi-Purpose: With This Portable Device, You Can Easily Amplify Your Voice In Every Situation. 5. Suitable For Speeches, Tutoring And Outdoor Speeches, As Well As Singers And Tour Guides. The Clear And Powerful Sound It Produces Is Perfect For Any Setting - From Yoga Class To The Shopping Mall. Description. 1. Interface Type: Usb 2.Output Power: 10w 3. Power Supply Mode Built-In 2200mah Lithium Battery 4. Number Of Speakers: Single Speaker 5.Material: Plastic 6. Speaker Adjustment Method: Knob 7.Signal To Noise Ratio: 75db 8. Audio Channel: Mono 9. Effective Distance: 10m Color: rose gold material: plastic Package Contents: 1 x Amplifier With Screen Display 1 x Headset 1 x Strap 1 x Charging Cable 1 x English manual Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.