Bluetooth Version: 5.0 Frequency range: 2.4GHz-2.48GHz Support protocols: A2DP, AVRCP, HSP, HFP Frequency response range: 20Hz-20KHz Standby time: about 1000 hours Music/call time: about 5-6 hours Input voltage / current: 5V / >500mA Output power: 7mW+7mW Material: ABS Plastic Size: 66x35.5mm/2.59x1.39inch Package Includes: 1 Pair Wireless Earbuds with Chaging Case 1 Piece Charging Cable 1 Piece User Manual