Features: The Micro SD input allows you to listen to your favourite tunes. Over 3 hours of playtime lets you jam, whatever activity you are doing. Magnetised Earbuds help prevent cable mess by storing them securely together. Protective carry case is included to keep your earphones safe while travelling. Tired of your own music? Listen to your favorite radio station with the built-in FM Radio With a stylish metallic colour finish, these earphones have all the features you could possibly need. The built in walk-and-talk feature allows you to take calls on the move. SPECIFICATIONS: Bluetooth Version: V4.2 Chip Set: JL Profiles: HSP/HFP/A2DP/D1/AVRCP Bluetooth Range: 10m Driver Size: 10mm Impedance: 16 oHm Frequency Range: 20Hz - 20kHz Signal to Noise Ratio: >90dB Sensitivity: 96+/-3dB at 1khz Battery: 55mAh / Earbud Playtime: 3-4 Hours Charging Time: 1.5 Hours SD Card: Up to 32GB What's in the box Volkano Chromium Series Bluetooth Headphones 2 X Spare Silicone Earbuds Instruction Manual USB Charging Cable Protective Carry Case