Swissten TWS Stone Buds Bluetooth Stereo Earbuds with Microphone

Minimalist design stereo Bluetooth headphones with microphone for listening to music and making phone calls. Packaged in SWISSTEN retail packaging. Design: SWISSTEN STONEBUDS headphones are very comfortable thanks to their ergonomic shape and minimalist design. Therefore, you can enjoy listening to your favorite music at full volume with complete comfort. Rechargeable case: An elegant rechargeable case gives you the ability to charge the headphones anywhere and significantly extends the battery life of the headphones up to four times. Bluetooth connection: Enjoy listening to music with miniature Bluetooth headphones SWISSTEN STONEBUDS. SPECIFICATIONS:Bluetooth: v5.0True Wireless Stereo - TWSRange: 10 mEarphone battery capacity: 2 x 45 mAhCase battery capacity: 300 mAhEndurance: 2.5 hoursCharging cable: Micro USB (included)Charging time: 2 hoursCase size: 70 x 39 x 31 mmBT profiles: A2DP, AVRCP V1.5, HFP V1.6, HSP V1.2Frequency range: 20 Hz - 20 kHzSensitivity: 105 dB SPL (sound pressure level) at 1 kHzImpedance: 16 Ohm