
EarFun Free 2S
Score: 65/100
Sony WF-C510
Score: 75/100Rankings

The Sony WF-C510 are ultra-light true-wireless earbuds offering up to 11 hours of playback and Bluetooth 5.3 with multipoint connectivity. They lack active noise cancellation and premium codecs, which may limit audiophile appeal. Ideal for commuters and gym-goers who value comfort and battery life.

The EarFun Free 2S are compact in-ear earbuds offering a quick 10-minute charge and IPX7 water resistance. Their short 7-hour battery life and lack of active noise cancellation limit extended use. Ideal for users seeking lightweight, splash-proof earbuds for short outings.
| Attribute | ![]() | ![]() |
|---|---|---|
7 hours | 11 hoursbest | |
| ↓ lower better | 4 gbest | 78.5 g |
| ↓ lower better | 10 minutes | 5 minutesbest |
— | 20,000 Hzbest | |
7 mmbest | 6 mm | |
— | 10 mbest | |
1.5 yearsbest | 1 years |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | ![]() | ![]() |
|---|---|---|
Battery & Power(2) | ||
Battery Life (hours) | 7 hours | 11 hours |
Quick Charge Time (minutes) | 10 minutes | 5 minutes |
Build & Design(2) | ||
Weight (g) | 4 g | 78.5 g |
IP Rating | IPX7 | IPX4 |
Audio(2) | ||
Driver Size (mm) | 7 mm | 6 mm |
Frequency Response (Hz) | 20-20000 Hz | 20000 Hz |
General(1) | ||
Warranty (years) | 1.5 years | 1 years |


Products in the top-left offer the best value (high score, low price).

Professional reviewers commend the WF-C510 for its feather-light weight, solid 11-hour battery life, and convenient Bluetooth Multipoint capability, positioning it as a strong value proposition in the budget true-wireless segment. However, they note the high-frequency roll-off and absence of ANC or premium codecs, indicating the sound signature may not satisfy audiophiles or users seeking advanced audio features.
Everyday users praise the earbuds for their comfort, long battery life, and easy device switching, highlighting the compact case and IPX4 rating as practical for daily commutes and workouts. Recurring complaints focus on the subdued treble, lack of ANC, and limited information about call quality, suggesting the product is best for casual listening rather than critical audio or noisy environments.