Review: ADV. 500 True Wireless Earbuds – The Smallest and Powerful Earbuds

Published on May 8, 2023, 6:18 p.m.

The ADV. 500 True Wireless Earbuds from Advanced Sound Group are an impressively compact and affordable pair of wireless earbuds. Despite their tiny size, these earbuds deliver surprisingly loud and powerful sound with deep bass. They utilize the latest Bluetooth 5.2 technology for an expanded wireless range up to 40ft and instant pairing. With a lightweight and ergonomic design, touch controls, and built-in mic, the ADV. 500 earbuds are a great everyday carry option.
 ADV. 500 True Wireless Earbuds

Key Features

  • World’s smallest true wireless earbuds
  • Bluetooth 5.2 connectivity
  • 6mm dynamic drivers for powerful sound with deep bass
  • Ergonomic design for comfort and secure fit
  • Touch controls for playback and call control
  • Built-in mic for calls
  • Compact charging case for portability
     ADV. 500 True Wireless Earbuds


One of the most notable features of the ADV. 500 earbuds is their incredibly small size. The charging case is barely larger than a quarter, making it the world’s smallest true wireless charging case. The earbuds themselves are tiny and lightweight, with a rounded design that fits comfortably and securely in the ear.

The minimalist aesthetics and variety of color options (black, pink, white, lavender) give them an elegant and modern look. The included silicone ear tips come in multiple sizes for a customized fit. A built-in wrist strap on the case adds convenience. Overall, the thoughtful design elements make these earbuds an excellent choice for active use and portability.
 ADV. 500 True Wireless Earbuds


Despite their small footprint, the ADV. 500 earbuds are packed with useful features. Bluetooth 5.2 enables quick pairing and a stable wireless connection up to 40ft from your device. The 6mm dynamic drivers deliver surprisingly powerful and balanced sound with emphasized bass.

Touch controls on each earbud allow for convenient access to playback, volume, calls, and voice assistants. The built-in microphone enables clear phone calls. Fast charging provides up to 5 hours of playtime, while the compact case extends it to 25 hours total. The IPX4 water resistance rating means they can withstand sweat and light rain.
 ADV. 500 True Wireless Earbuds

Sound Quality

With custom-tuned 6mm drivers, the ADV. 500 earbuds put out impressive audio with strong bass and clarity across the frequency range. The sound profile leans towards a lively, V-shaped signature that enhances bass and treble. This makes them especially suitable for pop, hip hop, EDM, and other beat-driven genres.

While audiophiles may want more refinement, the exciting sound is fantastic for everyday listening and exceeds expectations for the price and size. Volume levels go high enough for noisy environments.

Comfort & Fit

Despite having one of the smallest form factors on the market, the ADV. 500 earbuds maintain a comfortable and secure fit. The angled nozzles and variety of eartip sizes allow you to achieve a customized, noise-isolating seal without pressure. The rounded edges and featherlight 4.4g weight means you barely feel them in your ears. This makes them suitable for extended wear.
 ADV. 500 True Wireless Earbuds

Battery Life

Battery life is decent but not exceptional. You get around 5 hours of continuous playback on a full charge, which is good for true wireless earbuds. The pocket-sized charging case provides an additional 4 full charges, delivering up to 25 hours total. Charging the earbuds for just 10 minutes provides about 1 hour of listening time. Quick charging via USB-C means you can easily top up the case during the day.

Use Cases

The ADV. 500 earbuds are ideal for those looking for a compact and portable pair of true wireless earbuds. Their tiny size makes them great for activities like working out or commuting where you want earbuds that fit securely and don’t weigh you down. The sound quality makes them suitable for listening to music, podcasts, audiobooks, and more. They also work well for taking calls with their built-in microphone.

User Feedback

  • Many reviewers praised the compact size and comfortable fit of the earbuds. They stay put during activities.
  • Sound quality gets decent marks, with good bass performance highlighted. Audio is loud and clear.
  • Some users faced initial pairing issues but were able to resolve them.
  • Battery life is rated at around 4-5 hours per charge. Not the longest but reasonable given the size.
  • Microphone quality for calls is mediocre. Voice sounds somewhat muffled.
  • At $30, they offer great value compared to more premium true wireless options.


  • Extremely compact and lightweight
  • Comfortable and secure fit
  • Loud, bass-heavy sound
  • Bluetooth 5.2 with long range
  • Touch controls and built-in mic
  • Good value for money


  • Battery life could be better
  • No wireless charging
  • No active noise cancellation


Overall, the ADV. 500 True Wireless Earbuds deliver great value by packing advanced features and surprisingly powerful sound into a compact, ergonomic package. Despite a few shortcomings like average battery life, these tiny earbuds are versatile performers that punch above their size and price class. For those seeking portable wireless audio on a budget, the ADV. 500 earbuds are easy to recommend.


  • Driver: 6mm dynamic driver
  • Frequency response: 20Hz - 20kHz
  • Bluetooth version: 5.2
  • Wireless range: Up to 40ft (12m)
  • Battery life:
  • Earbuds: 5 hours (at 50% volume)
  • Charging case: 20 hours extra charge
  • Charging time: 1 hour (earbuds), 2 hours (case)
  • Charging port: USB-C
  • Water resistance: IPX4 sweat and splash proof
  • Touch controls: Play/pause, track skip, volume, call answer/end, voice assistant
  • Microphone: MEMS microphone for calls
  • Weight: 4.4g per earbud, 35g charging case
  • Dimensions:
  • Earbuds: 19 x 15 x 19mm
  • Charging case: 25 x 40 x 63mm

What’s Included

  • ADV. 500 earbuds (pair)
  • Charging case
  • 3 pairs of silicone ear tips (S/M/L sizes)
  • USB-C charging cable
  • Quick start guide and warranty information

How to Use

  • Remove earbuds from case and pair with your phone via Bluetooth settings.
  • Place earbuds in ears with correct sized ear tips inserted. Twist to lock in place.
  • Tap either earbud to play/pause music or answer/end calls. Swipe to adjust volume.
  • Place earbuds back in charging case when not in use to power off and recharge.
  • Case provides an additional 15 hours of battery life for recharging earbuds on the go.
ADV. 500 True Wireless Earbuds