Only one size of earpieces remaining. Functionality confirmed. Brand: Panasonic IP Standard (Waterproof Standard): IPX4 Bluetooth Version: Bluetooth 5.0 Drive System: Dynamic Type Bluetooth Codec: AAC, SBC Wearing Style: Left and Right Separate, Completely Independent Driver Size (mm): 8 mm Charging Time: 2 hours Wireless Standard: Bluetooth Charging Port: USB Type-C Weight (g): 7 g Wireless Features: Multi-pairing Wireless/Wired Connection: Wireless Headphone/Earphone Functions: Noise Canceling, Microphone, External Sound Input, Sound Quality Adjustment, Automatic Power On Function, Automatic Power Off Function, Waterproof, Splashproof, Remote Control Structure: Sealed Type Headphone/Earphone Type: Canal Type Low-Frequency Range (Hz): 20 Hz High-Frequency Range (kHz): 20 kHz Color: White Connection Type: Wireless Type: Left and Right Separate Features: Bluetooth, Noise Canceling Color: White Color: White Connection Type: Wireless Type: Left and Right Separate Features: Bluetooth, Noise Canceling Color: White Color: White