What's in the box:

Neck Massager Electric USB Smart Neck Massage with Heat 6 Modes 16 Levels Portable Cordless Massage for Neck Pain Relief at Home Office Outdoor Travel (Standard)

The intelligent neck massager is designed to relieve the neck soreness and tiredness by 6 modes and 16 intensities of massaging. Lightweigh and compact easy to carry and comfortable to use.

Features:
Multiple Massage Modes -- There are totally 6 modes switched by single push on Mode button. You could choose from 16 intensities by clicking High/Low buttons streamlined into massager body. The massager will reset to default intensity level 1 for security purpose once power off.
3D Fit U-design Neck Massager -- Electric neck massager using the latest 3D fitting U shape ergonomic design, adjustable arm band designed, perfectly fits for human neck skin, provides comfortable touching for relieve and relax pain, stiff and fatigue of cervical muscles, improve sleep quality and promote blood circulation.
Lightweight & Portable Pulse Neck Massager -- The Pulse Neck Massager only weighs 5oz, and with modern compact design, which is handy to carry it with you at home, office, car, gym and travel.
Deep Tisuue Neck Massager -- The smart neck massager uses low-frequency electrical pulse, magnetic effect, loop traction three-synchronous treatments to form high-performance composite energy field.
Easy to Use -- Long press the power button to turn on/off. Short press the Mode button to switch 6 massage mode. If you want to increase or decrease the intensity of massage, you can press the button "High" or "Low".

Specification:
Color: White
Power Supply: 180mAh lithium battery
Power: 3.7V/1W
Voltage:5V/0.5A
Woking Time: 2-4h
Woking Mode: 6 Mode
Level: 16 gear adjustable
Pluse Frequency: 0-1000hz
Pluse Width: 20-400us
The Maximum Output Amplitude of a Single Pulse: > 7uc
The Maximum Output Energy of a Single Pulse: 300mJ
The Maximum Output Amplitude: < 50V> Item Weight: 144g / 5.1oz

Packing List:
1 * Smart Neck Massager
1 * USB Cable
1 * User Manual
1 * Gel Stripes