Bluetooth V4.0 CSR headset portable with round neckband for sturdy fitting. Inbuilt hidden Mic for calls, support multiparing. Features - Features micro USB port to charge the batttery - Supports bluetooth, TF card and FM radio modes - Sports & gym neckband bluetooth stereo headphone - Supports phone calls and audio files from smart phoneTechnical Specifications: Product SKU: A10525-B Bluetooth: Bluetooth V4.1 Battery: 3.7V 180mAh Range: Up to 10m Bluetooth Version: 3.0 A2DP Play Time: Plays upto 5 hours Standby Time: Up to 200 hours Charging time: Up to 2 hours Frequency Response: 20Hz - 20KHZ Support Profile: A2DP / AVRCP1.4 / HFP Dimension: 137 x 168 x 17 mm (L x W x H) Product Weight: 40g (Approx) Package Content:Wireless earphone / Micro USB cable / User manual / 2 extra pairs earplugs