Features: Amplify your sound experience with this portable speaker amplifier featuring 5h play time, stereo sound output, and compatibility with smartphones, laptops, and tablets for 3.5mm/TYPE C connection. With 350mAh rechargeable battery, and delivers clear sound with >90dB through its 3W output driver. Ideal for music enthusiasts, remote workers, and traveler lightweight for mobile entertainment or professional presentations. Perfect for enhancing movie night, outdoor picnics, or conference calls in dorm room, home offices, or park setting with its pocket sized portability plug and play operation. Engineered with minimalist aesthetics, this corded speaker amplifier maintains stable connection without draining device battery during extended use. Specifications: Component:ABS Size:Approx.46mm/1.81inch Output power: 3W Battery: 300mAh Frequency: 50Hz-1800Hz Working hours: about 5 hours Net weight: about 50 grams Package Includes: 1 Set 3.5mm Speaker note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.