New Bluetooth Headset V3.0 For Sonim XP3400 Armor Cell Phone - One Touch Design - Weights only 7 Grams - Better Sound v3.0 Bluetooth V3.0 +EDR compliant Up to 4 Hours of Talk Time 60mAh Li-Polymer Battery Standby Time: Up to 60 hours Range: 10 Metres, Only weights 7 grams