Product details of Awei Y119 TWS Portable Series Mini Portable Outdoor Wireless Speaker Superior Bass Sound Superior Sound Quality  Bluetooth Version V5.0 BR EDR BLE Play Mode: Bluetooth / TF Card Speaker Full Range Unit: 45mm 4ohms Speaker Power: RMS 5W Power Output: 3W Charging Voltage: 5V / 0.5A S/N: ≥80dB Distortion: ≤1% Frequency Response: 100Hz-15KHz Battery Capacity: 1800mAh / 3.3V-3.7V Working Time: 6-8hours Charging Time: about 4 hours Bluetooth Transmission Distance: 10M-15M Note: 1. Due to the difference between different monitors, the pictures may not reflect the actual color of the item. 2. Compare the detail sizes with yours, please allow 1-3 cm error, due to manual measurement. 3. Please leave a message before you give the bad feedback, if the products have some problems. 4. Thanks for your understandings.