Tronsmart Sounfii R4 Earphones are made for music and optimized for use in any environment - working from home, at the office, or on the go. Designed with a custom acoustic platform, Sounfii R4 Earphones are engineered to deliver powerful, balanced sound in a compact, in-ear form factor. These earbuds have 4-mic call technology for clear virtual meetings or mobile phone calls, ENC for better focus, and are comfortable for all-day use. Each earbud has up to 7 hours of listening time with two additional charges provided by its pocket-sized charging case to give you up to 28 hours of combined playback.

• 4 Mics ENC Noise Cancellation: ENC noise reduction can provide a high-resolution call experience, accurately capture your voice, and reduce background noise. Featured with quad-mic call noise cancellation, Sounfii R4 offers exceptional call clarity even in bustling environments.
• Stereo Bass Sound: Bluetooth earbuds are equipped with 12mm composite titanium drivers to deliver deep, rich bass and precise audio clarity, allowing you to enjoy music, movies, and calls with an enhanced overall experience.
• Premium design: Inspired by the mysteries of space, the design of Sounfii R4 combines premium materials with an ergonomic form factor to ensure a comfortable listen for every user.
• Perfect fit: The noise-canceling Bluetooth headphones adopt an ergonomic semi-in-ear design, which is lightweight and compact, dispersing ear canal pressure while keeping it firm, comfortable to wear for a long time, and will not fall off during exercise. The wireless headphones feature IPX4 waterproof function, sweat-proof, suitable for cycling, running, gaming, travel, exercise, yoga and business.
• Charging case: A quick and convenient charging case allows you to boost your earbud’s battery as and when you need to. Simply charge your case, to deliver 28 hours of high-quality sound on the go.
• Smart Touch Control: Just touch the earbuds to skip songs, play/pause music, answer/hang up calls, and enable voice assistance, which helps you easily achieve multiple functions without taking out your phone.
• Bluetooth 5.3 and One-step Automatic Pairing: Our wireless earbuds have advanced Bluetooth 5.3 technology, faster transmission speed, stronger anti-interference, longer Bluetooth range, stable connection and low latency, allowing you to use it easily at home, in the office and during exercise. After the wireless Bluetooth headphones are connected for the first time, just open the charging box and the earbuds will automatically connect to your phone.