Kalenji 900 earphones take comfort and stability to its highest level: featuring completely redesigned tips to fit a wide range of ear shapes and sizes, a cable for around the ear with memory foam, and 12mm ear pieces (compared with 8mm for the Kalenji 500). Kalenji 900 earphones also have longer battery life: 8 hours (compared with 4 hours for the Kalenji 500) and they are more compact.

When you run, your whole body moves. Your earphones need to be perfectly stable in your ears. You sweat when you run, so your earphones need to be resistant to perspiration. And you need to keep a good perception of outside noises. These three different requirements guided us throughout the design of the KALENJI 900 sports earphones.

KALENJI 900 earphones use the shape of your ear to ensure stability when running. The cable linking the 2 earphones passes over your ears and a memory-form insert adapts to your shape. - The silicone buds were designed with wing tips which fit into your ears. The earphones are thus stabilised, without causing discomfort. 3 sizes of tips are supplied.

When it's hot and you are running, you will sweat. You're caught unaware by a rain shower. KALENJI 900 earphones are resistant to rain and perspiration. We chose watertight earphones and buttons. They successfully passed the rain tests we apply to all watertight products. Once your run is over, keep your Kalenji 900 earphones away from moisture, in a dry environment.

Whether you are running in town, in a park or in the country, it's unpleasant to feel yourself cut off from the world. We chose an "open" design. That means the buds don't enter your ear canal. As a result, the feeling of pressure when running is avoided. It's more comfortable. Compared with in-ear design, you can still hear outdoor sounds.

KALENJI 900 earphones have battery life for 8 hours of listening time. A voice alert will notify you of your battery level when you switch off your earphones so that you don't forget to charge them before your next run. KALENJI 900 earphones can be charged with the micro-USB cable supplied.

We selected soft silicone for the buds of the earphones that fit in the ears. We studied ear shapes and conducted comfort tests with our testers to help us design these buds. The buds are the result of three generations of earphones.

The KALENJI 900 earphones are worthy of all your favourite tracks, with a miniature version of "bass-reflex" technology, often used in lounge speakers: a tube at the rear of the earphone creates a vent towards the outside. This system provides balanced sound by accentuating the bass which often takes second place in this type of earphone.

We prefer to keep things simple! We have simplified the process for connecting your KALENJI 900 earphones. Just turn on the earphones and go into the Bluetooth settings of your phone to start searching for a Bluetooth device. Click on “KALENJI 900” and you're done! The next time, your phone will automatically connect to your earphones, as long as they are switched on and close by. Don't forget to turn on your phone's Bluetooth ;-)

There is nothing more annoying than your music cutting out. That will happen if the bluetooth reception is not good enough. We paid particular attention to the quality of the KALENJI 900 antennae so that never happens. And since you might be running in the gym, we have ensured that the range can reach up to 10m when unobstructed.

Most bluetooth earphones are controlled by your phone, in a pocket or armband (for changing volume, taking a call etc.). The remote control is often on the cable, which can cause instability. To avoid that, we have built the remote control and microphone of the KALENJI 900 directly in the earpieces. This avoids the moving cable causing interference when you're running. The buttons are also much more accessible.

These are all the functions you can control with your KALENJI 900: - adjust the volume (press the Volume +/- buttons) - pause your music (press the Play button) - skip to the next track (press the Play button twice) - answer a call (press the Play button) - reject a call - hang up (press the Play button) - Open Siri or Google Voice (press and hold the Volume+ and Volume- buttons for 2 secs)

A silicone pouch is supplied for storing your earphones :-)

The wireless Bluetooth 4.1 connection is compatible with all smartphones (IOS > 6.1 et ANDROID > 4.1), tablets and all equipment with Bluetooth function: AD2P/HSP/HFP/AVRCP. Most Apple and Windows computers are compatible. For some Windows configurations, you may be asked to install Bluetooth profiles.

Speaker diameter 12.2 mm Impedance 32 ohms Sensitivity 102 Db (+/- 3 Db à 1 Khz and 1 mW at input) Frequency range 20 hz-20 Khz Battery: 120 mAh (battery life 8 hours) Bluetooth range: 10 M

We take the quality of our products very seriously. We made many prototypes, gradually improving on them with lab tests and jogging tests. If you are not satisfied with your earphones, see our return policy: https://www.decathlon.fr/landing/retour-et-echange/_/R-a-retour-echange

DECATHLON products include a 2-year warranty. For any questions, visit our support website support.geonaute.com . You will find tips to make effective use of your device: instructions, frequently asked questions from our users, and video tutorials. In order to provide you with maximum support, the assistance support team is available 24/7 and will respond to you personally.