Soundcore V40i open-ear earbuds use 16 × 13mm drivers and adjustable ear hooks to deliver audio without sealing the ear canal. Four hook positions allow the speaker position to be adjusted closer to the ear for fit and sound.

The earbuds provide Bluetooth 5.4, multipoint connection and 6 hours of playback per charge with 21 hours total using the case. IP55 protection and SweatGuard support use during workouts and outdoor activity.

• Model No.: A3878
• Input: 5V-0.5A
• Output: 5V-0.2A
• Drivers: 16 × 13mm Drivers
• Playtime: 6H / 21H
• Water Resistance: IP55
• Waterproof Rating (Earbuds): IP55 + SweatGuard
• Bluetooth Version: 5.4
• Fast Charging: 10 Mins = 1.5 Hrs
• Calls: 4 Mics with AI
• Multipoint Connection: Yes
• Weight: 10.1g (0.36oz)
• Design: Open-Ear Hook, Open Comfort
• Control: Touch Control
• Ear Hook Adjustment: 4 Levels
• EQ Presets: 22
• Custom EQ: Supported
• Case Design: Lid-Free Case
• Microphone: 4 Mics + AI Algorithm

• The 21-hour battery life supports daily listening with fewer charging interruptions.
• The open-ear design helps you stay aware of your surroundings during activities.
• Rotatable ear hooks provide a comfortable fit for different users.
• 16mm drivers deliver balanced sound for music and calls.
• IP55 protection makes them suitable for workouts andoutdoor use.
• Bluetooth 5.4 provides a reliable wireless connection.