... A2DP,AVRCP,headset,handfree profile Long Standby time to 1200 h CE/RoHS/FCC/B Features:1. The hi-fi Stereo Bluetooth Headphone ... .3. Standby time: up to 1200 hours.4. Certifications: BQB, CE, FCC, RoHSPackaging: Blister cardAccessory:1. USB charger.2. USB charging ... period, we will take back and replace the goods with quality problems, and pay related freight. Hi-Fi Bluetooth Headset