Lenovo HE05 Neckband Bluetooth Headset Bluetooth 5.0 chip , 10m barrier-free connection, Neck hanging: skin-friendly silicone appearance, universal folding and deformation of metal lining; Metal sound cavity, 10mm professional tuner tuning horn; Super long service time: 6 hours play time, 120 hours standby time; Full functions: IOS battery display/volume adjustment; Cut the song/pause/play; Answer/hang up the call Fashion color : glamour red/sky grey/apple white * Brand Name: Lenovo * Model: HE05 * BT Version: 5.0 * Material: Metal, Silicone, TPE * Transmission Distance: 10m (no obstacle) * Waterproof: IPX5 * Dustproof: IP6X * Battery: 3.7V / 80mAh * Working Time: about 8 hours * Standby Time: about 120 hours * Charging Time: about 2 hours * Color: Black, Red, White (Optional) * Horn Diameter: 10mm * Speaker Sensitivity: 98dB * Frequency Response Range: 20-20kHz * Package includes: * He051 * Micro USB cable1 * ear hats3(S,M,L) * Manual1