Features 1.Long Battery Life: The Bluetooth speaker has built in 1000mAh high capacity battery, providing 6 to 7 hours of long lasting battery life, and you can listen to music for a long time. 2.HD Call: This bluetooth speaker has a built in microphone, you can answer calls directly through it, providing a high definition and convenient call experience. 3.Bluetooth 5.0 Connection: Turn on your wireless speaker and device, search for Bluetooth, select and connect to ZY 010, then start enjoying your music time. 4.Shocking Bass: Upgraded sound quality, more shocking bass, mono speaker improves the bass performance and makes the bass clear, while keeping the small form factor. 5.Serial Connection: This wireless speaker supports dual wireless serial connection system, which can play 2 speakers at the same time, giving you a better music experience. specificationItem Type: BT Speaker_x000D_ Material: ABS_x000D_ Battery Type: Built in 1000mAh Li Ion Battery (Included)_x000D_ BT Version: 5.0_x000D_ BT Name: ZY 010_x000D_ Effective Distance: Approx. 10m/32.8ft_x000D_ Power Input: USB C_x000D_ Dual Device Wireless Serial Connection: Turn on both speakers without connecting your cell phone, double click on any one of the two speakers to pair them and connect them together, successful connection will have an indicator light flashes, and a prompt sound, connecting the phone to select a ZY 010 connection can play two speaker at the same time. PackageList1 x_x000D_ _x000D_ BT Speaker 1 x Charging Cable