Specifications Name: Stonego Fashion Wireless Speaker Bluetooth Version: V4.2 (Support TWS) Bluetooth Range: Up to 33 Ft/ 10 M Frequency Response: 90Hz-20Khz Speaker Power: 5W2 Distortion: < 3%SNR: > 80dB Music Time: 4-6 hours Battery Capacity: 5V, 1500 mAh Material: Fabric, Leather, ABS Net Weight: 16.6 oz/ 470 g Built-in Microphone: Yes Music Control: Yes Input Mode: Bluetooth/ USB/ TF Card/ 3.5mm AUX Features SMALLER SIZE BIGGER SOUND - Two-channel enhanced bass module and bass passive diaphragm to provide strong bass without distortion even at highest volume.CRYSTAL CLEAR SOUND - The wireless stereo speaker have 10W full-range drivers and excellent stereo sound and with deep bass.TWS FUNCTION - 360Stereo Sound, Thanks to TWS function, pair two bluetooth speakers, you can achieve true wireless Bluetooth playing for left and right channels separated. (Enable 10W + 10W powerful drivers when you have 2 of this speakers)ULTRA PORTABLE - Bluetooth speakers portable can easily carried on backpack or bicycle, used in office, home or gatherings. Convenient use when moving or traveling: camping, hiking, cycling, etc.IPX5 WATERPROOF - This portable speaker keep on kicking, even when wet. Waterproof means you can listen effortlessly in any environment, perfect for shower, by the pool or beach, even playing in the rain.