MULTI-SPORT

Get accurate live feedback about your performance while listening to your music and getting trained by some of the world’s best athletes.

Running

Hear your Heart Rate, Pace, Duration, Distance, Cadence, Steps, Laps, Calories.

Cycling

Hear your Heart Rate, Speed, Cadence, Power, Duration, Distance, Calories.

Gym

Hear your Heart Rate, Calories, Pace, Duration.

Triathlon

Hear your Heart Rate, Speed/Pace, Cadence, Power, Duration, Distance, Calories.

Heart Rate Sensor

Accurate and Real-Time, Clinically-Validated Heart Rate Monitor.

Activity Tracker

Speed/Pace, Distance, Laps, Calories, Cadence & Duration.

8GB Memory

Store your workouts, plans, and over 2000 songs.

7h Battery

At least seven hours from a full charge. Go the Distance!

Voice Coaching

Adapted to your body using patented technology and accurate sensors.

No Phone Required

Exercise without needing multiple devices. Music and tracking in one!

Sweatproof

Ideal for exercising indoors and outdoors. Rain, sweat ... no problem.

Bluetooth, BLE & ANT+

Connect to smartphones, smart watches, speed & cadence sensors, and more.

As featured on

Our Collection

KuaiFit Headphones

Price: $159

Sale: $129

You Save: $30

FREE Shipping

KuaiFit Cycling Package

Price: $209

Sale: $159

You Save: $50

FREE Shipping

KuaiFit Cycling Sensor

Price: $49

Sale: $39

You Save: $10

FREE Shipping

KuaiFit Eartips

Price: $19

Sale: $9

You Save: $10

FREE Shipping

how it works

Smart sport headphones that automatically measure your body and performance during any sport, providing adaptive real-time voice coaching.

Connect

Add 2000+ songs, store workouts and plans to the 8GB memory.

Calibrate

Sensors adapt to your body to provide customized coaching.

Achieve

Train like never before and achieve your fitness goals.

SMART COACHING

KuaiFit becomes your wearable personal Coach. It automatically adapts training plans to your body using integrated sensors and smart software.

Get Connected

KuaiFit operates autonomously using its internal memory and microchip, but it can also connect to your smartphone, sport watch, bike sensor, bike computer, power meter, gym equipment, and practically any device with ANT+, Bluetooth, and BLE.

Access Your Data

Connect to your PC/Mac to upload music and training plans to your KuaiFit headphones. Visualize and share your sport data on your phone with the KuaiFit app, or at Kuai.Fit web. If you like using other sport apps, you can easily export your workout data saved in .FIT.

tech specs

The world's only multi-sport smart headphones that automatically measure your body and performance during any sport, using patented technology, accurate sensors, and proprietary software algorithms.

Hardware Features

Software Features

Measures

Connectivity

Compatibility

Applications

Heart Rate Sensor

Environment

Music Compatibility

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KuaiFit Headphones

$159$129 FREE Shipping

KUAIFIT Sport Headphones plus indoor ear tips (S,M,L), outdoor ear tips (S,M,L), two types of silicone earbud covers, a micro-USB cable, and a user guide, and 3 training plans. KUAIFIT includes a Heart Rate Sensor, Activity Tracker, MP3 Player, 8GB Memory, 7h Battery, Voice Coaching, and Bluetooth, BLE & ANT+ Connectivity.

IN STOCK IN USA, EU, & ASIA. SHIPS WITHIN 48hr via EXPRESS COURIER.

1 YEAR FREE REPLACEMENT WARRANTY - If at any time within one year of receiving your order placed through www.kuai.fit you experience any issue with your KuaiFit that cannot be resolved through online customer support, you can send it back to any of our warehouses in the USA, EU, or Asia, and we will send you a free replacement.

MONEY BACK GUARANTEE - If at any time within ten days of receiving your order placed through www.kuai.fit you are not 100% satisfied, you may return it to us for a refund. No questions asked. Any items damaged due to reasons not covered under warranty cannot be accepted. All associated shipping fees are non-refundable.

33 customer reviews

Add to Cart

Well thought product

Reviewed on Aug. 14, 2017, 3:16 p.m.

Very light earpiece you don't feel the weight on your ears, seems built for durability. The audio player works flawlessly, the 'joystick' controls are well thought and easy to use. Have not yet tried a training plan with it, but the heartrate monitor seems to be right on point.

I like the sound quality

Reviewed on Aug. 14, 2017, 3:17 p.m.

I was one of few to get KuaiFit. At first it was a fight frustration to get hold them after many months of delays. But I must say they are worth it. I like the sound quality; clear and crisp, I like the bass. 8 GB of memory is a big plus. KuaiFIT music / volume / training control (joystick) on headphone are awesome and very unique to this product and must say very well thought off. Heart beat monitory works flawlessly.

Really, Really pleased with these

Reviewed on Aug. 14, 2017, 3:12 p.m.

All in all, although they took a while to come to fruition from the campaign, I'm really happy I waited for these. Recommend them.

I have enjoyed it for 3 days

Reviewed on Aug. 14, 2017, 3:14 p.m.

The heart beat measurement seems very accurate and much more responsive than the optical HR sensor of my fenix 3 HR.

Cancle

KuaiFit Cycling Package

$209$159 FREE Shipping

KUAIFIT Sport Headphones plus Cycling Sensor, indoor ear tips (S,M,L), outdoor ear tips (S,M,L), two types of silicone earbud covers, a micro-USB cable, a user guide and 3 training plans.

IN STOCK IN USA, EU, & ASIA. SHIPS WITHIN 48hr via EXPRESS COURIER.

1 YEAR FREE REPLACEMENT WARRANTY - If at any time within one year of receiving your order placed through www.kuai.fit you experience any issue with your KuaiFit that cannot be resolved through online customer support, you can send it back to any of our warehouses in the USA, EU, or Asia, and we will send you a free replacement.

MONEY BACK GUARANTEE - If at any time within ten days of receiving your order placed through www.kuai.fit you are not 100% satisfied, you may return it to us for a refund. No questions asked. Any items damaged due to reasons not covered under warranty cannot be accepted. All associated shipping fees are non-refundable.

33 customer reviews

Add to Cart

Well thought product

Reviewed on Aug. 14, 2017, 3:16 p.m.

Very light earpiece you don't feel the weight on your ears, seems built for durability. The audio player works flawlessly, the 'joystick' controls are well thought and easy to use. Have not yet tried a training plan with it, but the heartrate monitor seems to be right on point.

Cancle

KuaiFit Cycling Sensor

$49$39 FREE Shipping

Using ANT+ wireless technology, this sensor can transmit speed and cadence data to your KUAIFIT headset. Simply attach the sensor to your bike, pair with your KUAIFIT headphones, and start your session!

IN STOCK IN USA, EU, & ASIA. SHIPS WITHIN 48hr via EXPRESS COURIER.

1 YEAR FREE REPLACEMENT WARRANTY - If at any time within one year of receiving your order placed through www.kuai.fit you experience any issue with your KuaiFit that cannot be resolved through online customer support, you can send it back to any of our warehouses in the USA, EU, or Asia, and we will send you a free replacement.

MONEY BACK GUARANTEE - If at any time within ten days of receiving your order placed through www.kuai.fit you are not 100% satisfied, you may return it to us for a refund. No questions asked. Any items damaged due to reasons not covered under warranty cannot be accepted. All associated shipping fees are non-refundable.

33 customer reviews

Add to Cart

Well thought product

Reviewed on Aug. 14, 2017, 3:16 p.m.

Very light earpiece you don't feel the weight on your ears, seems built for durability. The audio player works flawlessly, the 'joystick' controls are well thought and easy to use. Have not yet tried a training plan with it, but the heartrate monitor seems to be right on point.

Cancle

KuaiFit Eartips

$19$9 FREE Shipping

Included in the Ear Tip Accessory Set are indoor ear tips (S, M, L), outdoor ear tips (S, M, L), swimming ear tips (S, M, L), and two KUAIFIT cable clips.

IN STOCK IN USA, EU, & ASIA. SHIPS WITHIN 48hr via EXPRESS COURIER.

1 YEAR FREE REPLACEMENT WARRANTY - If at any time within one year of receiving your order placed through www.kuai.fit you experience any issue with your KuaiFit that cannot be resolved through online customer support, you can send it back to any of our warehouses in the USA, EU, or Asia, and we will send you a free replacement.

MONEY BACK GUARANTEE - If at any time within ten days of receiving your order placed through www.kuai.fit you are not 100% satisfied, you may return it to us for a refund. No questions asked. Any items damaged due to reasons not covered under warranty cannot be accepted. All associated shipping fees are non-refundable.

33 customer reviews

Add to Cart

Well thought product

Reviewed on Aug. 14, 2017, 3:16 p.m.

Very light earpiece you don't feel the weight on your ears, seems built for durability. The audio player works flawlessly, the 'joystick' controls are well thought and easy to use. Have not yet tried a training plan with it, but the heartrate monitor seems to be right on point.

Cancle