Wireless Bluetooth Earbuds with Mic, in-Ear Earbuds with Microphone for Sport and Workout, Bluetooth Headphones with Charging Case

Specification:
-Effective distance: about 33 feet
-Speaker size: 10mm
-Impedance: 16Ω
-Microphone: MEMS Omnidirectional Mic
-Audio Sensitivity: -32dB+/-3dB
-Speaker power: 20mW*2
-Signal to noise ratio: 大≥70DB
-Degree of distortion: ≤5%
-Frequency: 20Hz-20kHz.
-Headphone battery capacity：40Ah
-Headphone battery capacity: 300mAh

What’s In The Box: -Wireless Earbuds -Compact Charging Case -S/M/L EarTips -USB-C Cable -User Manual
How to recharge after exercise: Clean with water to remove sweat from the earbuds. Dry completely before placing in the charging case, paying particular attention to the charging connection points. Charge with a 5V certified charger and cable.