Colorful Water Transfer Printing Wireless Bluetooth Headset

Foldable stereo wireless bluetooth headset features:
1. High S/N ratio bluetooth audio frequency without any emitter;
2. Battery: 180 hours long standby/lithium battery inside lasts for 8 hours;
3. Sound: Full acoustic fidelity and strong bass voice;
4. Support multi-format files;
5. Switch conversation with music player modes automatically;
6. Charging time: 2 hours/pls charging more than 4 hours when first using headphone

Detailed specifications:
Support systems: Audio equipments with Bluetooth functions, such as PC, cellphone, MP3.
Bluetooth protocol standards: Bluetooth V2.1+EDR
Receiver range: 10m/360 degree;
Carrier frequency: 2402MHz-2480MHz
USB interference: High speed USB2.0
Battery: Chargeable lithium-ion polymer battery(3.7V/320mA/h)
Charger power: Computer USB interface DC5V; DC5V(500mA); Travel charger; DC5V(500mA)car charger
Successive working time: about 10 hours
Frequency response: 20Hz-20kHz
S/N ratio: -82dB
Speaker parameter:
Speaker diameter: 40mm
Impedance: 32
S. P. L.: 106dB S. P. L. At 1kHz
Rated Power: 20mW
Aggregate capability: 40mW
Frequency Response: 20Hz-20, 000Hz