PTron Tango Bassbuds Bluetooth earphones with the most advanced 5.0 chip. Faster and more stable, Using advanced audio processing technology, developed by a professional engineer, the sound quality is clearer and more natural, built-in MIC offers you better listening experience. Detailed and balanced with Hi-Fi clarity and dynamic response. Fashion and top-grade metal appearance of Earbuds make you the coolest in running, jogging, yoga, and high-intensity activities. 3D Stereo sound, wireless Earbuds make you enjoy the sound without the cables contrast to the traditional headphones, it delivers an incomparable listening experience in complete freedom. 1500mAh capacity, USB port output, can also be used as a power bank for other devices, such as cell phones, ipads. Connectivity: Bluetooth v5.0, Bluetooth features: HFP1.7, 1.2, A2DP1.3, AVRCP1.6 ,SPP1.2, PBAP1.2, & BDR/BLE, Transmission range: Up to 10M from the paired device, Speaker Impedance: 32 Ohms Driver Size: 8mm, Speaker Frequency Range: 20Hz-20kHz, Speaker Sensitivity: 95dB±3 dB, Speaker Output Power: 50mW, Music time: Up to 3 hours depending on the music volume level, Talk time: Up to 3 hour, Standby time: 120 hours, Charging time: About 1.2 hours, Battery capacity (earphones): 3.7V 50mAh each, Battery capacity charging case: 1500mAh, and Mic: Yes, built-in omni-direct.