Compare Open-Ear Designs
Compare open-ear and bone-conduction wireless audio by mechanism, fit, awareness limits, and the model details to verify before buying.
Tronsmart Sounfii R4 earbuds
Product details
General specs
- Brand: Tronsmart
- Model: Sounfii R4
Starting from €16.66
Last price update: 11/14/26
Tronsmart Sounfii R4 wireless earbuds with ENC call noise reduction.
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| Brand | Tronsmart | Tronsmart | Tronsmart | Tronsmart | Tronsmart | Tronsmart |
| Model | Sounfii R4 | Sounfii Q20 | Onyx Ace | S1 | SOUNFII Q20S | SOUNFII Q20S |
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| Price | €16.66 | €29.41 | €27.45 | €22.55 | €49.03 | €88.25 |
| Seller | Geekbuying | Geekbuying | Geekbuying | Geekbuying | Geekbuying | Geekbuying |
| Update | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 | Nov 14, 2026 |
| Size | 12.7 × 9.8 × 4.0; unit and axes not specified | 12.0 × 8.8 × 4.0; unit and axes not specified | 14.5*9.5*2.5 | 18.5*17.7*16.8 | ||
| Model Name | Sounfii R4 | Sounfii Q20 | Onyx Ace | S1 | SOUNFII Q20S | SOUNFII Q20S |
| Product Type | True wireless earphones | Wireless headphones | True wireless earphones | Sport headphones | Headphones | Headphones |
| App Control | Tronsmart app | Tronsmart App Control | Tronsmart App Control | |||
| Device Pairing | Pairs with 2 devices | Pairs with 2 devices | Pair with 2 devices | |||
| Noise Cancellation | Active | Hybrid active noise cancellation | Hybrid active noise cancellation | |||
| Playtime | 24 hours; basis not specified | 60 hours playtime | 60 hours; basis not specified | |||
