Vikye Wave Wireless Headphone

Specification: Item Type: Bone Conduction Headphones Material: ABS, silicone Product model: Wave version: 5.1 EDR Frequency range: 20Hz to 20kHz Connection distance: ≥10m/32.8ft Built-in battery: lithium-ion Battery capacity: 160mAh Playtime: Approx. 5 hours (80% volume) Talking time: Approx. 4 hours Standby time: Approx. 160 hours Charging time: Approx. 1.5 hours Charging voltage: DC 5V Water : IP 68 Small memory: 16GB (built-in) Supported formats: MP3, WAV Music mode: Local MP3 playback and Package list: 1 x Headphones 1 x USB Charging Cable 2 x Silicone Earplugs 1 x Small Earplug Storage Box 1 x Storage Bag 1 x Chinese and English Manual Note: Only DC5V adapter is supported for charging to avoid damage to the device caused by high voltage.