Wireless Speaker Featuring High Definition Bluetooth® 4.0 Technology | Simply Pair Your Device With The Speaker To Enjoy Dynamic Stereo Sound | Features High Definition Sound With A Built-In Microphone For Easy Hands-Free Calling | Perfect For Your Home, Office Or Outdoor Activities | Includes Professional Sleep-Aid System To Improve Sleep Quality With Nature Sounds | Additional Features Include 14 Built-In Custom Alarms, 5W DSP Tuned Speaker, FM Radio, Thermometer, Voice Messages, Social Media Notifications And App Controlled Light Display Customization | Download “Divoom TimeBox App” And Pair Your Device To Fully Customize The Device Settings | 121 Programmable Gem-Style LEDs And Over 256 Vivid Colors | Pairs From Up To 30 Feet Away | Charging / Audio I/O Cord Included | 2000 mAh Battery | Up To 8 Hours Of Play Time. Approximate Size: 4 1/2″ W x 4 1/2″ H x 2 1/8″ D, Imprint Area: 1 1/4″ W x 2 1/2″ H