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By certification 
Features
Controller: JL6976
Bluetooth Version: Bluetooth V5.1
Waterproof Standard: IPX-7
Description
Perfect for Home Offices: Each earbud has two microphones with beamforming noise reduction for superior vocal enhancement and background-noise suppression.
Incredible Sound Powered By Graphene Drivers: Delivers music with a wider soundstage and exceptional accuracy and clarity. BassUp technology further enhances bass by up to 43%.
40-Hour Playtime* with Fast Charge: A single charge gives you a full 7 hours of listening, while the charging case extends that to 40 hours. When you’re in a rush and need power fast, simply charge for 10 minutes and get up to 1 hour of playtime.
IPX7 Waterproof: wireless earbuds boast IPX7-rated protection that defends against liquids in any weather conditions.
One-Step Pairing: Our proprietary technology streamlines the setup process so when you remove the wireless earbuds from the charging case, they’ll automatically connect to the last paired device.
Product Details
Color: white/red
Bluetooth version: V5.1
Bluetooth chip: JL6976
Supported configuration file: HSP/HFP/A2DP/AVRCP
Support codes: AAC, SBC
Headphone battery: 25mAh
Charging bin: 180mAh
Loudspeaker 12mm moving coil device
Frequency response: 20-20KHz
Sensitivity/impedance 117dB±3dB /28Ω
Play/talk time: 4.0h / 3.5h
Standby time: >30 days
Product size (charging box) 48.2*25.1*50.3mm
Product weight: about 111g
Charging port: Type-C,3.7V
Packing List
2 * Mini Bluetooth Earphone
1 * Charging box
1 * USB charging cable
1 * User manual
http://www.alphadgt.com/
