Specifications: Brand Lenovo Model TW60 Color Black, White Wearing Type Half-in-ear Microphone Yes Volume Control Yes bluetooth Version V5.3 Supported Profiles HSP/HFP/A2DP/AVRCP Support Audio decoding AAC,SBC Transmission Distance 33feet (10m) Frequency Response 20-20k Hz Battery Capacity Earbud: 30mAh*2 Charging Box: 300mAh Charging Time (h) 1-2h MusicTime 5-6h Charging Interface Type-C PackageIncluded: 1*Lenovo TW60 TWS Earphones with Charging Box 1* Charging Cable