| Specification | Details |
| Brand | EarFun |
| Model | Free 2S |
| Form Factor | True Wireless Stereo (TWS) In-Ear Earbuds |
| Driver Configuration | Dynamic Composite Drivers |
| Core Chipset | Qualcomm® QCC3040 SoC |
| Bluetooth Version | Bluetooth 5.2 |
| Bluetooth Profiles | A2DP, AVRCP, HFP, HSP |
| Supported Audio Codecs | aptX™, AAC, SBC |
| Call Noise Cancellation | 4-Mic Array with Qualcomm® cVc™ 8.0 Technology |
| Gaming Mode Latency | 60ms Super Low Latency Mode |
| Water Resistance Rating | IPX7 Waterproof with SweatShield™ Technology |
| Wireless Working Range | Up to 15 meters / 49 feet (without obstacles) |
| Battery Capacity | 40mAh × 2 (Earbuds) / 400mAh (Charging Case) |
| Total Playback Time | Up to 30 hours (7 hours from earbuds + 23 hours from case) |
| Fast Charging Performance | 10-minute quick charge provides up to 2 hours of playback |
| Charging Duration | ~1.5 hours for earbuds, ~2 hours for case via USB-C, ~3.5 hours via Wireless |
| Charging Interface | USB Type-C and Qi Wireless Charging compatible |
| Smart Interface Features | TrueWireless Mirroring Technology, Intuitive Touch Controls, Voice Assistant Activation |
| Companion App Support | EarFun Audio App (Custom EQ & Control Re-mapping) |
| Physical Dimensions | 66 mm × 39 mm × 29 mm |
| Total Weight | 47 g |
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