Bluetooth Handsfree: Yes 
Bluetooth Version: V4.0 
Operating Range: 10m 
Total Power: 3W 
Channels: 1.0 
Interface: 3.5mm /USB 2.0 
Microphone: Yes 
SNR: 68db 
Sensitivity: 80db 
Frequency Response: 2.4GHz-2.48GHz 
Impedance: 4ohm 
Applicable Products: 
Radio Tuner: Yes 
FM Frequency: FM78.8-FM106.1 
Supports Card Type: TF 
Built-in Battery Capacity :1500mAh 
Battery Type: Li-ion battery 
Music Play Time: 8-10Hours 
Plug Specifications: USB 
Power Supply: 3.7V DC 

Product Features: 
Unique Rugged Square Design with Splashproof&Shockproof&Dustproof& functions make it suitable for outdoors and shower. 
Small and lightweight;with the lanyard, fits easily into your bag or pocket for on the go use,just set your hands free, making your travels more convenient. 
Featuring a large speaker cavity for excellent sound, this tiny but powerful speaker can fill any room with rich audio and clear and crisp music. 
The built-in 1500mAh rechargeable battery enables a breakthrough 8-10 hours of playtime so you can jam through a full day and it only takes 3-4 hours for you full charge the speaker. 
Included USB charging cale, it can recharge from your laptop, desktop, or powered USB hub 
Connect with any bluetooth-enabled device (Bluetooth 4.0) or just plug in with the traditional audio cable to start your tunes. 
NFC technology - Tap-to-pair with NFC technology for easy and instant connection (If your bluetooth audio device has NFC function). 

Packing list: 
1 x Bluetooth Speaker 
1 x USB Power Cable 
1 x 3.5mm Audio Cable 
1 x English & Chinese User Manual"