Retro Bluetooth Speaker With Card Insertion, USB Charging, Wireless Portability, Gift Making, Portable Mini Stereo Features: One click interconnection technology Two audio systems are connected together, allowing the sound to be three-dimensional and experiencing a cinema like experience. Long battery life, continuous throughout the dayThe 800mAh polymer battery has a long battery life and can be continuously played for 8 hours throughout the day. 5.0 Bluetooth, fast transmission High performance chip, more stable, fast transmission, low power consumption, obstacle and effective transmission distance of 10 meters. Classic design with knob adjustmentClassic design knob adjustment for more convenient volume adjustment. Incoming calls can be answered with one click, with clear sound quality and no lag Regardless of any playback mode, incoming calls can be answered hands-. Product Description: Product Name: Bluetooth Audio Product colors: orange Bluetooth specification:5.1 Transmission distance: 10m Horn specification:1 52mm, 4/3W Amplifier specification: 3W Battery specification:18650battery, 800mAh Package size:12.5116.2cm/4.94.32.4in Package weight:335g/0.74lb Product List: 1 Charging cable 1 Bluetooth audio