Detailed Product Description Features: bluetooth earphone headset for mobile1) Bluetooth technology, compliant with Bluetooth specification V1.1 2) Environment, operating temperature: -20°C to 60°C 3) Dimensions: 60 x 18 x 11mm 4) Lightest weight: only 10.8g 5) Standby time: a week 6) Standby time: up to 168 hours 7) Super low radiation 8) Super compatibility, so that when changing cell phones, ...