Model Number:b20 Waterproof Standard:IPX-4 Active Noise-Cancellation:Yes Charging time:2 Hours Work Time:3 hours Battery of Earbud:40 mah Battery Capacity of Case:600 mAh distance:10m Standby time:120 days Product name:TWS Earbuds with speaker BT Version:5.1 BT Wireless Earbuds Use:Portable Media Player, Mobile Phone, Gaming, Travel, PROFESSIONAL, HiFi Headphone Function:Waterproof, Noise Cancelling, Microphone
