JOYROOM JR-T04S TWS Bilateral Bluetooth 5.0 Sport Headphones with built-in microphone, assistant function and charging box. The JR-T04S Bluetooth in-ear headphones from JOYROOM impress with beautiful design, high wearing comfort and numerous useful features. In addition to Bluetooth, the wireless speaker also has an integrated microphone with hands-free function, assistant function, HD stereo sound quality and mobile charging box. So you can not only listen to music, but also phone. Product features: Superior sound quality without disturbing cable, true-to-life voice playback when making calls. Soft and comfortable even after hours of use. Charging box with built-in 500 mAh battery. Battery life when listening to music: approx. 49 hours (including battery of the charging box) Battery life per headphone: Approx. 3 hours charging time: 1.5 - 2 hours Specification Type: Sport Bluetooth In-Ear Headphones Bluetooth Version: V5.0 Supports: A2DP, HFP, HSPN, SPP, A2SP and AVRCP/Handfree Connection Type: Wireless Max. Range: up to 10 m Microphone: yes (integrated). Power supply: 5 VDC/120 mA. Output power: 2 x 3 mW. Battery (headphones): 3.7 V/45 mAh. Polymer Li-ion SNR (insulation value): S/N > 95. Talk time: up to 3.5 hours. Music playtime: up to 3.5 hours. Charging time: 1.5 – 2 hours. Standby time: 200 hours Kit includes: headphones, charging box, micro USB charging cable, instruction manual