Charge3 Life Waterproof Bluetooth Stereo Speaker, Built-in MIC, Support Hands-free Calls & TF Card & AUX IN & Power Bank(Red) Filter-Switch This metal bracket secures the

This metal bracket secures the earpiece speaker to the display assembly

the keyboard is more stable and does not shake

4 inch and below laptop

With a cup groove to prevent the bottom of the cup from sliding

Compatible with Apple:  MacBook Pro 16 inch (2141)

Charge3 Life Waterproof Bluetooth Stereo Speaker, Built-in MIC, Support Hands-free Calls & TF Card & AUX IN & Power Bank(Red) Filter-Switch This metal bracket secures the1. Bluetooth V4. 1 technology, up to 10m transmission distance. 2. Built in Microphone: Supports hands free calls. 3. Support TF card music playback, plug and play. 4. Support AUX Audio Function. 5. Life waterproof. 6. Up to 6 hours playing time. 7. Can be used as a power bank. 8. Output power: 2 x 10W. 9. Frequency response: 65Hz 20KHz 10. Signal to noise ratio:>=80dB 11. Battery: 3. 7V, 6000mAh 12. Power supply: 5V 2. 3A 13. USB charge output: 5V