Key Features Bone Conduction Design: Open-ear listening helps users remain aware of their surroundings. 8 GB Built-In Storage: Supports local WMA, FLAC, WAV and MP3 audio files. Bluetooth 6.0: Wireless connectivity with SBC and AAC audio protocols. Multipoint Connection: Conne two devices simultaneously. IP68 Waterproof: Rated for submersion at a depth of 2 m for up to 1 hour. Battery: Up to 12 hours of music playback at 50% volume. Technical Specifications Component Specification ACEFAST Model N10 Produ Type Color Black Built-In Storage 8 GB Audio Formats WMA, FLAC, WAV, MP3 Bluetooth v6.0 Audio Protocol SBC / AAC Transmission Distance 10 m Driver 13 mm transducers Impedance 8 ohm Sensitivity 85 dB +/- 3 dB Frequency Response 20 Hz-20 kHz Battery Capacity 220 mAh 1 x omnidirectional Noise Reduction Single-mic ENC Charging Input DC 5 V / 0.18 A, 4-pin Charging Time 2 hours Music Playback 12 hours at 50% volume Call Time 10 hours at 50% volume Materials ABS, acrylic, silicone Dimensions 130 x 94 x 38 mm Weight 25 g Waterproof Rating IP68 Certifications CE, RoHS, FCC, UKCA, EAC Compatibility & Important Information The N10 supports multipoint connection with two devices simultaneously. Local playback supports WMA, FLAC, WAV and MP3 files stored in the built-in 8 GB memory. ACEFAST specifies the IP68 rating for submersion at a depth of 2 m for up to 1 hour. Package Contents USB-A to 4-pin cable x 1 Manual x 1 Please to review A: Yes. The N10 has 8 GB of built-in storage and supports local WMA, FLAC, WAV and MP3 audio files. Q: Can the N10 conne to two devices at the same time? A: Yes. ACEFAST specifies multipoint connection for two devices simultaneously. Q: How long does the battery last? A: ACEFAST specifies up to 12 hours of music playback and up to 10 hours of call time at 50% volume. Q: Does it support fast charging? A: Yes. A 10-minute charge provides up to 4 hours of usage. Q: Is the N10 waterproof? A: ACEFAST rates the N10 at IP68 and states protection for immersion at a depth of 2 m for up to 1 hour. Q: What charging connection does it use? A: The N10 uses a 4-pin magnetic charging connection, with a USB-A to 4-pin cable included.