Lenovo HT30 TWS Brand: Levono Style: In-ear Vocal Principle: Dynamics Bluetooth Version: 5.0 Drive Diameter: 10mm Waterproof: Life water splash-proof Frequency Response: 20-20000Hz Mic: Yes Sensitivity: 91-3dB Earphone Charging Duration: 1h Cabin Charging Duration: 2h Earbud Battery: 30mAh Charging Case Battery: 300mAh Rated Input: 5V/1A Bluetooth Distance: 10m Protocol: A2DP/HFP/HSP/AVRCP' (Earbuds) Battery Specifications Battery type Polymer lithium battery Battery Output Voltage 3.7V Battery Capacity 30mAh (Each earbuds) Full Charging Time ≤1h (Charging box) Battery Specifications Battery type Polymer lithium battery Battery Capacity 300mAh Input 5V 500mAh Charging Plug/Socket Type Micro USB Full Charging Time ≤2h Audio Specifications Speaker Size Ф10 Speaker Sensitivity 91dB±3db Speaker Impedance 16R Speaker max input Power 5mW (Each earbuds) Speaker frequency Range 20-20KHZ Microphone Type Ф4*1.3 Microphone frequency range 20-20KHZ Microphone Sensitivity -42+-3dB Default volume Android phone 60% volume level Apple phone Align with phone volume level Size Charging box size 49*58*27 mm Bluetooth IC AC6936D Bluetooth Version 5 Bluetooth Profiles AVRCP 1.3，GAVDP 1.3，AVDTP 1.2，A2DP 1.2 Audio Codecs SBC Talk Time 4-4.5H Play Time 3-4H Earbuds Standby Time 25H Charging case Standby Time (If the Earbuds are not in the charging case) 200days Operating Distance 8-10M Pairing Code 0000 Pairing Name T16 LED Red,Blue Certification/Testing report CE,ROHS,UN38.3,MSDS Operation Temperature -10 to +55 ℃ Storage Temperature -20 to 60 ℃ N.W. "Earbuds : 16gram Earbuds+charge box are total 32g" Netural packing box+accessories: