The Conceptronic Wireless Bluetooth Headset Speaker is a multimedia device which connects wirelessly to a Bluetooth mobile phone, PDA, laptop or PC. A built-in NFC feature enables simple pairing with NFC-enabled devices by a single touch.The device features both headset and speaker functions, providing you with more ways to enjoy music. Worn normally as an over-the-head set of headphones, the headset provides clear, high-quality sound. Speaker functionality is activated by twisting the earcups outwards, projecting much louder sound out into the room, party, beach or to a group of friends. The headset also enables hands-free speech in the office or home, offering top quality audio and voice clarity. A great companion for travelling or simply everyday life.Features:- Bluetooth 3.0 wireless connectivity- Easy, one-touch pairing with NFC-enabled devices- Twist the earcups outwards to activate speaker function- 400mA rechargeable battery built-in. Sustains 3-6hr operation- Built-in microphone for hands-free voice calls- 3.5mm audio input- Plug and Play music from Micro SD/TF card- Skip to the end of the images gallery- Skip to the beginning of the images gallerySpecifications:- Max. operating temperature (°C): 45- Min. operating temperature (°C): 0Package contents:- Multilingual quick installation guide- 3.5mm audio jack cable- Micro USB to USB cable- Battery capacity (mAh): 400- Battery capacity (Wh): 1,48- Battery voltage: DC 3.7V- Audio power in RMS (watt): 3- Bluetooth version: 3.0- Built-in microphone: Yes- Frequency band: 2.4GHz- Frequency response: 90Hz-18kHz- Signal to noise ratio: ?70db- Power input: DC 5V/0.5A- Product weight (kg): 0,254- Product breadth (mm): 200- Product depth (mm): 80- Product height (mm): 185- General features: Speaker: 40? 4ﾽ/3W- Recharge time: 2 hours- MicroSD/TF card slot: 1- 3.5mm line in: 1- Total harmonic distortion: ?0.3%- Connection type: Bluetooth