If you want to find a high-quality and multifunctional Speaker， Bluedio BS-3 Bluetooth 4.1 Stereo Bluetooth Speaker is your best choice. BS-3 Speaker combines the Wireless Stereo Bluetooth and 3.5mm audio Wired Connection. BS-3 Speaker supports hands-free with high-performance microphone and its built-in dual speaker let you greatly enjoy wonderful wireless music. Moreover， don��t worry， if your music players (such as， MP3 / MP4， etc) have no Bluetooth function， you can connect the music players to the headset via the included 3.5mm audio cable to enjoy your favorite music at home or outdoor. Its compact portable size and lightweight is perfectly suitable for home use， office use， picnic， etc.BS-3 Features:*2 in 1 Multifunctional: Wireless Stereo Bluetooth + 3.5mm audio Wired connection Speaker.*Bluetooth 4.1 technology， strengthen the data transmission (transmits data at high speed)， more stable signal (and bring you smooth music experience).*Easy to pair with almost all Bluetooth-enabled audio / music players devices， such as， Android / iOS Smart Phones， Tablet， Notebook， desktop， etc. *Included 3.5mm audio jack provides a simple wired connection of a variety of music players (Such as， MP3 / MP4， etc) without Bluetooth function.*Be equipped with built-in High-performance dual speaker and Mic， offering high-quality stereo sound effects and powerful bass system， bring you superior sound effect， best choice for listening to music， watching movie， etc. *Supports 3D Surround Stereo Music. *Use Noise Suppression and Echo Cancellation technology for clear call communication and clear sound quality. *Supports hands-free function， conveniently answer incoming call. Never miss a call when you're enjoying music. Also supports voice prompt. *Has Independent Volume control button: you can easily control the volume (+) / volume (-)， Previous Track / Next Track， etc. *With compact portable size， easy to carry， and you can put it on your office desk， beside table， sofa， etc to enjoy wonderful music. BS-3 Specifications:Brand Name: Bluedio Model Number: BS-3Bluetooth version: Bluetooth 4.1 + EDR， Class 2Support profiles: HSP， HFP， A2DP， AVRCPFrequency Range: 2.4GHz ~ 2.48GHzFrequency Response: 20Hz ~ 20KHz Operation Range: 10m (free space).Speaker Power: 5W * 2 Speaker Diameter: 52mm Interface Micro USB Port， 3.5 audio input PortBattery: Built-in rechargeable 3000mAh lithium batteryInput Voltage: ��1VMusic / Talk Time: About 5 hoursStandby Time: 1000 hoursFully Charge Time: 3 ~ 4 hours.Charge Port: Micro USB Port Color: Black， White (Optional)Main Item Size: 23.0 * 6.5 * 6.5cm / 7.16 * 2.36 * 2.04in Main item weight: 631g / 22.2oz(Bare Machine)Package weight: 26.0 * 15.8 * 8.5 cm / 8.26 * 5. 51 * 2.59inPackage size: 1090g / 38.4ozPackage List: 1 * BS-3 Stereo Bluetooth Speaker1 * USB Cable 1 * 3.5mm Audio Cable 1 * (Chinese， English， French， Spanish， Japanese， German) User Manual