Audio Store
coming soon
Shipping to:


You have no items in your shopping cart.

NuForce BE Sport4 Wireless Bluetooth In-Ear Earphone with Mic - Black

More Views

NuForce BE Sport4 Wireless Bluetooth In-Ear Earphone with Mic - Black

  • 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.

Special Price $129.00

Regular Price: $149.00

Save 13 %



“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 Graphene Hi-Res Sports Bluetooth Earphones

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.

AAC/aptX Decoding

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

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 minutes 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


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.

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.

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.

Magnetic Button

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

Built-in Microphone

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

Technical Specifications

Additional Information

Package Contents
  • BE Sport4 earphones
  • 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
Web Reviews
Colour Black
Warranty 1 year (local)
Product Weight (g) 15.5
Availability Discontinued
Product Type Earphone
Style/Type Universal In-Ear
Features AAC, aptX, aptX HD, Bluetooth, High-Res Audio Certified, IPX4~IPX6 (Sweatproof, Splashproof/Water-resistant), Microphone, SBC
Driver Configuration 1-Driver (Dynamic)
Frequency Response (Hz) 20Hz – 20kHz
Impedance (Ω) 32Ω
Sensitivity 92dB ± 3dB
Headphone Design Closed-Back
Microphone In-Line Microphone with Remote/Controls
Cable Style Wireless
Input Connectivity Bluetooth
Additional Tech Specs Refer to Official Optoma NuForce website for Full Technical Specifications
User Reviews