Portable Design: The built-in battery provides 8 hours of playtime. The flexible stretch bracket makes it easy to fold up and pack with the travel case or backpack. Also, the supplied travel case will protect the DOSS Cellphone holder from external impact damage when you’re on business trips, on an airplane, or in the car. Wireless Charging Note: 1, Wireless charging function is compatible with all devices packed with Qi technology, but note these models need to be put in sideways: iPhone 12 mini,iPhone 12 Pro max 2, Need to plug the speakerphone into a charger outlet, and then your device can wirelessly charge. 4-in-1 Function: Bluetooth Speaker, mobile phone holder, conference microphone,and 15W wireless phone charger make it more convenient for you to use in the office, on business trips, at home, or online learning. Universal Compatibility: DOSS cellphone stand is widely compatible with most mobile phones, tablets, and e-readers. Also support multiple devices and applications, such as Skype, Google Hangout, Webex, Zoom, FaceTime, GoToMeeting, etc. Portable Bluetooth Speaker: DOSS cell phone stand with a portable Bluetooth speaker delivers superior sound with tight mids and crystal clear highs without distortions. Moreover, the speaker comes with two built-in microphones for a clear call. Safety and Non-Slip: The stand for the speaker has 4 small rubber feet to prevent the stand from moving around. Rubber padding on the back where you lay the phone on to protect naked phones. Adjustable Phone Holder: Flexible Stretch Bracket design to free your hands, providing multiple viewing angles. Make your hands free to watch TV shows, movies, music videos, live streams, or video chat.