• 【2021 BLUETOOTH 5.0 + POWERFUL CHARGING CASE】. Strong connectivity by adopting Bluetooth V5.0 technology and high sensitivity antenna. They deliver Hi-Fi sound and have natural and superb sound performance with focus on getting a clear midrange, a balanced bass and treble performance. Fantastic TWS (True Wireless Stereo ) technology allows you to enjoy music without cord tangling troubles. The working range is up to 33ft (10m) 
• 【EXTRA LONG WORKING HOURS】 The wireless headphones offer 6 hours continuous use for music or talking on a single charge.  Change Between Single And Binaural Mode With One Step Operation Upromax Wireless Bluetooth Earbuds have no master earbuds, you are no longer have to wear a fixed earphone for Single Ear Mode and easily switch between Single Ear Mode and Binaural Mode. Meet your use requirements for different occasions.
• 【COMFORTABLE DESIGN AND EASY TO USE】. Ergonomic design to ensure secure fit and comfort wearing. They are light weight, anti-drop and sweat-proof, ideal for sports like running, hiking, gym exercise. Simply press once to answer or reject phone calls, Bluetooth pairing, power on/off, play/pause music/video etc. Built-in Mic, great for hands-free calling, listening to music, online chatting, or working use.
• 【COMPATIBILITY】: The sport headsets are compatible with nearly all Bluetooth-enabled devices, such as iPhone, Samsung, BlackBerry, HTC, iPad Pro and any other Bluetooth-enabled devices. Easy and fast to connect, simply enjoy your music within 3 seconds.
• 【12-MONTHS WARRANTY】: We provide best quality wireless headset and best service for each buyer, 12 month warranty, 100%  replacement for any quality issue during warranty period! Life-time friendly service, answer and solve your problems within 24 hours.

Key Specifications/Special Features:

Technical specification:
Version: Bluetooth 5.0 
Supports: HSP/HFP/A2DP/AVRCP Transmission A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3
Function: Music, Phone call
Working voltage:3.1 V~4.2 V
Frequency: 2.4GHz
Range:10m (33feet)
earphone battery capacity: 30 MAH rechargeable Li-ion battery
Charging Capacity:300 MA
Music Time:2-3 Hours
Headset charging:30-50 Minutes
Battery charging:2 hours
Earbuds with the master/slave switch function
Compatible with: Compatible With Almost All The Android, Apple, Microsoft System With Bluetooth Mobile Phone

Features:
Bluetooth version: 5.0 + EDR both sides ultra low consumption
Compatible wit All Bluetooth function with mobile phones
Standby Time: Both ears stand for 6 Hours
Charging Power: Computer USB Port, Mobile Phone Charger, Car Charger
Warranty: one year

Package List:
2 * Earbuds (Left & Right)
1 * Charging Case
1 * Charging Cable
1 * Manual