Compatible with iOS and Android Devices Features: - Auto Pairing - Binaural Calls - Lightning Port Specifications: - Wireless Version: V5.0 + EDR - Speaker Impedance: 32 Ohms - Microphone Sensitivity: 42dB - Frequency: 2.4GHz - Battery Capacity: 35mAh/250mAh - Working Temperature: 10-55 Degrees Celsius - Input: DC5V - Transmission Distance: 10-15 m - Talk Time: 3-4 hours - Music Playing Time: 2-3 hours - Charging Time: 1-2 hours - Standby Time: 100 hours What's in the box 2 x Wireless Earphones 1 x Charging Case 1 x Lightning Charging Cable 1 x Protective Silicone Cover for Charging Case User Manual