product description:
ULBRE Cello Finger Grip + External battery case, was successfully funded on Kickstarter, and is ready for Amazon buyers now. Technical Specifications: Battery: Li-polymer 3.7 Volt
Capacity: 4000 mAh
Recharging Time: 3 hours (approx.) ·
Input Current: 1A
Output Current: 1A
Size: 106mm(L) x 65mm(W) x 8.7mm(H)
Weight: 75 grams (approx.)
Finger Grip Ring: Metal Kickstand Holder
Material: Genuine Leather+Aluminum Metal
Battery Protection:
Over-temperature cut-off during charging;
Over-charging and discharging cut-off protection;
Short circuit protection.
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