BE Sport4

Graphene Hi-Res Wireless Sports Bluetooth Earphones


  • IPX5 water and perspiration resistance tailored for sports.
  • 6mm graphene driver membrane for Hi-Res sound quality.
  • Support AAC and aptX decoding.
  • A long battery life up to 10 hours, no need to recharge for one week when exercising one hour daily.
  • Quick charge design for playing 2 hours of music after charging for just 15 minutes.
  • Aluminum CNC cavity for precision angles, easy wearing, and excellent hand feel.
  • Patented SpinFit TwinBlade® 360° double-layer ear-tips for perfect ear canal fit.
  • Strengthened earphone cable using DuPont Kevlar bulletproof fiber enhances tensile strength for sports.
  • Interior hook front cavity tube design for optimal fit and comfort.
  • A wide variety of ear supports and ear tips, diving suit material cases, and mountaineering hooks for personalized matching.
  • Magnetic button design for each wearing on the neck.
  • Built-in microphone for taking incoming calls and activating voice assistants.



“Working in the daytime and exercise in the nighttime” is the common pattern of modern busy people. Therefore, earphones that are easy to match clothes and fulfill the sports need is NuForce’s design concept for the BE Sport4. With a wide variety of lightweight accessories, the BE Sport4 will become the first choice of working people who exercise after work.

The driver membrane of BE Sport 4 is made of graphene, a futuristic material according to scientists, to make Hi-Res sound quality a reality. The exclusive NUFit sports design and a cavity with a special hand feel, the BE Sport4 upgrades wearability and sound quality. Together with the SpinFit TwinBlade® double-layer ear tips with 360° rotation, the BE Sport4 perfectly fits with the ear canal to enhance noise cancellation. With the IPX5-compliant water/perspiration resistance tailored for sports use, the BE Sport4 allows 2 hours of continuous play after charging for just 15 minutes. Users who don’t charge earphone regularly will not need to worry about battery level when exercising out of impulse.

BE Sport4
NuForce憑什麼第一 BE Sport4狂掃歐美日藍牙耳機排行榜

BE Sport4

Practically flawless wireless earbuds

TechRadar – leading technology publication in Europe and North America

Following on BE Sport3’s impressive achievements, including earning an award for best in-ear headphones by leading tech magazine T3, BE Sport4 has received much attention from TechRadar, which called these earphones “flawless”. They were also named among TechRadar’s top ten picks for Bluetooth earbuds in 2018 and 2019. These earphones have received high praise in Europe, North America and Japan and are among Amazon’s 100 best-selling products.

BE Sport4
BE Sport4
BE Sport4

Graphene Features

Graphene is so far the world’s thinnest and hardest nano-material (1nm= 10-9m) with the lowest impedance. The thickness of 200,000 graphene membranes equals that of one piece of hair.

At the same area (1m²)

Graphene weighs 1,000 times lighter than a piece of paper

200 times harder than steel

10 times better conductivity than copper

Run along with the rhythm while listening to high-end sound.

6mm Graphene Driver Diaphragm

Compared to traditional driver diaphragms which require more power to drive, graphene diaphragm with a lighter weight can return to the original position more quickly for designer to nearly omit its need for energy consumption.

BE Sport4

AAC/aptX Decoding

With either the iOS or Android platform, BE Sport4 supports Hi-Res decoding.

BE Sport4

Exercise at Will: Let’s Go!

Super long battery life up to 10 hours

no need to charge for one week for exercising one hour daily.

Quick charge design requires only 15

minute charging for two hours of continuous music playing. Exercise at will? Let’s go now and leave battery worries behind.

Fit for Sports

UFit is NuForce’s total solution designed for fit, fashion, and conformity.

SpinFit TwinBlade®

Comprehensive accessories

Cut front cavity tube

IPX5 water/perspiration resistance

Robust earphone cable

BE Sport4

SpinFit TwinBlade®
Layer Ear Tips

Professional ear tip brand SpinFit has specifically designed the SpinFit TwinBlade® Double-Layer Ear Tips featuring a 360° rotary buffering structure for BE Sport series to fit the human ear canal, prevent falling out, reduce foreign-object feeling, and enhance noise cancellation to present delicate treble and deep, shaking bass.

BE Sport4

Accessory Diversity

For consumers to match the BE Sport4 with their working clothes more easily and mark out their personal styles while exercising, a wide variety of lightweight ear supports with and ear tips of different sizes are designed for consumers to match the BE Sport4 with their clothes to turn the BE Sport4 into a fashion statement.

Silver White

Carbon Black

BE Sport4

Sports Earphone Case

Water-repellent diving suite materials for easy carrying and protection of earphones.

Mountaineering hooks for hanging on backpacks or sports gear during exercise.

Cut Front Cavity Tube

Extend the cut front cavity tube design of the BE Sport3 for optimal fit.

Robust earphone cable

DuPont Kevlar bulletproof fiber

Made with DuPont Kevlar bulletproof fiber to enhance cable strength.

Cable Tensile and Swing Tests

Each BE Sport4 must pass demanding product tests before shipping.

Tensile test: 3kg vertical (at 90°), five second each cycle, totally five cycles.
Swing test: 200g weight.
swing amplitude: ±90°.
speed: 30 cycles/min (swing for ±90° each cycle).

Aluminum Texture
for Each Matching

In addition to looking good, the aluminum cavity is easy to match with clothes. The smooth CNC square cut makes it easy to wear and to identify the pairing direction. Each slip ear supports.

IPX5 Water/Perspiration Resistance

Enjoy exercise and forget about perspiration with IPX5.

BE Sport4

Magnetic Button

A magnetic button is designed at the tail for users to wear on the neck when jogging, firm and reliable.

BE Sport4

Built-in Microphone

Answer calls and activate voice assistants: Users can answer any incoming calls during exercise.

BE Sport4


Cable length58 ± 2cm
Driver TypeDynamic
Driver sizeΦ6mm
Microphone sensitivity-42dB ± 3dB
Frequency response20Hz – 20kHz
Sensitivity92dB ± 3dB
Bluetooth typeV4.1
Bluetooth profileHSP 1.2, HFP 1.6, A2DP 1.2, AVRCP 1.4,
aptX, AAC, SBC
Battery type3.7V/75mAh Lithium-ion battery*2
Battery life10 hours (depending on the actual condition of use)
Charting timeA battery life of 2 hours after charging for 15 minutes.
Weight (kg)15.5g (net weight)


+ One set of SpinFit CP230 ear tips (M)
+ 3 sets of silicone ear tips (S/M/L)
+ 9 sets of ear hook (three colors, No.0, No.1, No.2)
+ Case
+ USB charging cable
+ Cable hook
BE Sport4


Purpose built for fitness these reliable Bluetooth headphones boast a 10-hour battery life, and are sweat-and water-resistant.

Comfort is important while you’re exercising, which is why the Optoma BE Sport4 are lightweight and come with a range of custom ear tips. This means they fit securely in place, no matter how hard you’re working out.

The sound is ace, and if you charge them for only 15 minutes you get up to two hours of listening: great for last-minute gym sessions. "
Optoma’s BE Sport 4 earphones manage to look good and sound great at the same time

The sound’s pretty good too. The BE Sport 4s lack a bit of bass, but they provided a nice clear sound without being too tinny; something that afflicts plenty of other bluetooth earphones... "
I’ve worn the Optoma NuForce BE Sport4 during a few 5km runs, and with the right silicone tips, their stability has proved excellent. There are also some ear hooks in the box, for those wanting greater reassurance... "
They've done it again! First with the BE Sport3, now the BE Sport4 Bluetooth earphone is one of the best Bluetooth wireless earbuds about! These portable earphones combine style, build quality and amazing sound to create the perfect sports earphone as well as a superb all rounder for under £100.. "
The Optoma NuForce BE Sport4 are great sports earphones that last a long time between charges, are surprisingly comfortable to wear, and sound good too.

Great wireless sport earphones that offer long battery life, water-resistance and decent sound at the right price... "
Get in the zone with the help of Kenny Loggins in your lugs via these excellent wireless sports earphones, boasting 10 hours of battery life (and two hours from a single 15-minute charge), and astounding audio quality. Importantly, they’re also a secure but perfectly comfortable fit, and are sweat-resistant to boot... "
The NuForce BE Sport4 earbuds are sleek, high-performance buds that improve on their already five-star predecessors. They're ideal for exercise, although any urbanite will also find their lightweight functionality highly appealing... "
“Personally I am fully convinced with the Optoma BE Sport4 in-ear earphone. The price is completely justified. Here you get very good in-ears, which also come with a great processing and a nice sporty design. The Optoma BE Sport4 are, as the name suggests, suitable for anyone who wants to listen to music while doing sports. But also at leisure or on the way to work, the BE Sport4 are a reliable companion...” "
“For me personally the NuForce BESport4 has a good detailed depth with clear and clean frequencies. The additional bass completes the complete package. The BESport4 has great battery life and comes with lots of spare parts..." "
"Should you buy the BE Sport4? If you're looking for a solid, reliable pair of Bluetooth earphones that offer tons of customizability and great sound, then yes..." "

BE Sport4 Support