Feature: 1. Small and portable, comfortable grip and good hand feelings, suitable for long time using. 2. 15 Minutes intelligent timing, automatically stop after 15 minutes of continuous use to ensure scientific and intimate care. 3. 6MM Deep massage, small body size while has powerful massage force, good and effective using experience. 4. High frequency motor with strong and stable power, suitable for different body parts massage need. 5. Come with different massage heads that can fully meet the massage needs for leg, shoulder, arm and back. Specification: Item Type: Muscle Massager Material: ABSSize: Approx. 14 x 14cm / 5.5 x 5.5in Gears and RPM: 1-5 Gear warm-up relaxes 800-1200/RPM 6-10 Gear auxiliary stretch 1300-2100/RPM 11-15 Gear deep awakening 2200-2700/RPM 16-20 Gear relieve pain 2800-3200/RPM Applicable Parts: Shoulder, arm and leg Power Supply: Lithium battery Battery Capacity: 1800mAh (built-in) Massage Head: 1. Ball head: suitable for massaging arms, waist, back, buttocks, thighs, calf and other large muscle groups 2. U-shape head: suitable for neck, cervical vertebra, Achilles tendon massage, strong stimulation 3. Flat head: suitable for all kinds of muscle parts to relax and shape 4. Cone head: suitable for impacting deep tissues such as palms and soles 5. Flat shovel head: suitable for muscle sensitive parts or the elderly to relax muscle Usage: 1. Long press + key to power on and short press to increase strength 2. Long press - key, power off, short press to reduce the strength Strength: 20 Gears. Package List: 1 x Muscle Massager5 x Massage Head 1 x Manual 1 x USB Cable