FeaturesiOS / Android compatibleBattery life: up to 3.5 hours (22 hours with charging case)Microphone / remote / volume controlWaterproof (IPX4)105dB maximum sound outputImmerse yourself in your music with the Defunc True Go Slim True Wireless Sports Earphones. They connect to your smartphone using Bluetooth, so you can listen any time without getting tangled in cables. Adjust the volume and skip tracks by simply tapping the earbud – the on-bud controls make it easy to manage your music. You can also take phone calls hands-free with the built-in microphone. With up to 4 hours of playback time per charge, the True Go Slim Earphones are great for listening on the go. They\'re also water- and sweat-resistant, so you can use them outside whatever the weather.Instant 1-Step Pairing - Place the earbuds in your ears and select them from your mobile phone Bluetooth settings in 1 tap both earbuds are paired.Secure Fit LOUD Powerful Sound - 105dB maximum sound output with a secure silicone fit with big base performance and great low range. Huge improvements over average models.IPX4 Waterproof earbuds - Perfect for exercise, running, cycling, gym and outdoor sports. Splashproof design. Do not submerge in water.Charge On The Go Anywhere - Defunc TRUE GO slim wireless charging case provides 22 hours of play-time and each earbud provides 3.5h of playtime or 3h of call time on a single charge.TWS & Bluetooth 5.0 - The most advanced Bluetooth sound quality A2DP AVRCP HFP SBC total wireless stereo sound for fast and audible transfer without lag, stutter, or tangling.