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 battery - Supports Bluetooth, TF card and FM radio modes - Sports & gym neckband Bluetooth stereo headphone - Supports phone calls and audio files from smart phone Technical 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 up to 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 pair's earplugs What's in the box 1 X Astrum Bluetooth Sports Earbud with Neckband