LENOVO Thinkplus X15 Pro TWS Wireless Bluetooth 5.1 Earphone Waterproof HiFi Stereo Music Calling Headset - Pink

• Bluetooth 5.1 technology ensures fast data transmission speed, stable and fast connection, and low power consumption
• The true wireless earphones will automatically turn on and quickly pair the left and right earbuds after take out from the charging case
• Touch design, no pressure on ears. Play music and calls easily, and activate the voice assistant
• The two earbuds have built-in microphones for clearer calls, making it easy to answer calls while driving or exercising
• A 250mAh charging case can charge and store the earphones. The 30mAh battery in each earbud provides about 3 hours of music time

Specification: 

• Bluetooth version: 5.1
• Transmission range: up to 10m (without obstacles)
• Horn diameter: 13mm
• Frequency range: 20-20KHz
• Microphone Sensitivity: -42dB ± 3dB
• Impedance: 32?
• Charging box battery capacity: 3.7V 250mAh
• Headphone battery capacity: 3.7V 30mAh
• Music playback time: about 3 hours (depending on music volume)
• Charging time: about 1 hour (earphone), about 1.5 hours (charging case)