There are two options for the electric neck massager, USB charging or battery (the battery is not included), which can relieve fatigue and help you relax

Features:
TENS massage technology, easy to use, get rid of traditional massager. Small and convenient.
You can carry it at any time, you can put him in a bag, travel, office, etc. You can also relax yourself.
Relieve fatigue, neck, shoulders and back are available.
10 gears can be adjusted to choose a comfortable massage intensity.
Two options are available, battery or rechargeable.

Specification:
Product Type: Massage Sticker
Color: Black
Power supply: rechargeable, battery (optional)
Rechargeable battery information: AAA * 2 (not included)
Operating modes: 6 types
Frequency: 1 ~ 100HZ
Output current: Max 9.8ma
Running time: about 12 minutes at a time
Material: ABS+ hydrogel paste
Rechargeable lithium battery capacity: 150mAh
Host size: 5.7 * 5.7 * 1.8cm / 2.2 * 2.2 * 0.7in
Patch size: 13 * 6cm / 5.12 * 2.36in
Package Size: 15.6 * 7.2 * 2.8 * cm / 6.14 * 2.83 * 1.1in
Package Weight:
Battery models: 55g / 1.94oz
Rechargeable models: 70g / 2.5oz

Package List:
1 * Sticker
1 * Host
1 * Instruction